added 1791C
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ShazidMahsrafi
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Codes/1791 C - Prepend and Append/1791C.cpp
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Codes/1791 C - Prepend and Append/1791C.cpp
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#include<bits/stdc++.h>
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using namespace std;
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#define FAST_IO (ios_base:: sync_with_stdio(false),cin.tie(NULL));
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#define int long long
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#define ll long long
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#define ull unsigned long long
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#define endl '\n'
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#define ff first
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#define ss second
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#define pb push_back
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#define all(x) x.begin(), x.end()
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#define sz(x) (int)(x).size()
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#define yes cout<<"YES"<<endl
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#define no cout<<"NO"<<endl
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#define neg1 cout<<-1<<endl
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#define PI 3.141592653589793238
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#define MIN INT_MIN
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#define MAX INT_MAX
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#define INF LONG_LONG_MAX
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#define MOD 1000000007
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#define LLM 1000000000000000007
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ll factorial(ll n) { if(n==0) return 1; ll res = 1; for (ll i = 2; i <= n; i++) res = res * i; return res; }
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ll nPr(ll n, ll r) { return factorial(n) / factorial(n - r); }
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ll nCr(ll n, ll r) { return factorial(n) / (factorial(r) * factorial(n - r));}
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ll gcd(ll a, ll b) { if (b == 0) return a; return gcd(b, a % b); }
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ll lcm(ll a, ll b) { return (a * b) / gcd(a, b);}
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ull mypow(ull a, ull b) { ull ans = 1; a%=MOD; while(b){ if (b&1) ans = (ans*a) % MOD; a = (a*a) % MOD; b >>= 1; } return ans; }
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bool isPrime(ll n) { if(n <= 1) return false; for(ll i = 2; i*i <= n; i++) if(n % i == 0) return false; return true; }
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#ifndef ONLINE_JUDGE
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#define dbg(x) cerr << #x <<" "; _print(x); cerr << endl;
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#define dbgin(x) cerr << #x <<" "; _print(x); cerr << ";"<<endl;
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#else
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#define dbg(x)
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#define dbgin(x)
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#endif
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void _print(int t) {cerr << t;}void _print(string t) {cerr << t;}void _print(char t) {cerr << t;}
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void _print(long double t) {cerr << t;}void _print(double t) {cerr << t;}void _print(unsigned ll t) {cerr << t;}
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template <class T, class V> void _print(pair <T, V> p);
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template <class T> void _print(vector <T> v);template <class T> void _print(set <T> v);
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template <class T, class V> void _print(map <T, V> v);template <class T> void _print(multiset <T> v);
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template <class T, class V> void _print(pair <T, V> p) {cerr << "{"; _print(p.first); cerr << ","; _print(p.second); cerr << "}";}
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template <class T> void _print(vector <T> v) {cerr << "[ "; for (T i : v) {_print(i); cerr << " ";} cerr << "]";}
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template <class T> void _print(set <T> v) {cerr << "[ "; for (T i : v) {_print(i); cerr << " ";} cerr << "]";}
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template <class T> void _print(multiset <T> v) {cerr << "[ "; for (T i : v) {_print(i); cerr << " ";} cerr << "]";}
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template <class T> void _print(unordered_set <T> v) {cerr<<"[ "; for(T i : v) {_print(i); cerr<<" ";} cerr<<"]";}
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template <class T, class V> void _print(map <T, V> v) {cerr << "[ "; for (auto i : v) {_print(i); cerr << " ";} cerr << "]";}
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template <class T, class V> void _print(multimap <T, V> v) {cerr << "[ "; for (auto i : v) {_print(i); cerr << " ";} cerr << "]";}
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template <class T, class V> void _print(unordered_map <T, V> v) {cerr << "[ "; for (auto i : v) {_print(i); cerr << " ";} cerr << "]";}
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/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
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void solve()
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{
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int n;
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string s;
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cin>>n>>s;
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while(sz(s))
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{
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char f=*s.begin();
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char e=*s.rbegin();
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if((f=='0' && e=='1' && f!=e) || (f=='1' && e=='0' && f!=e))
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{
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s.erase(s.begin());
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s.erase(--s.end());
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}
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else
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break;
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}
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cout<<sz(s)<<endl;
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}
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int32_t main()
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{
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FAST_IO;
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int TC = 1;
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cin >> TC;
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while (TC--)
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solve();
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}
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241
Readme.md
241
Readme.md
@ -116,125 +116,128 @@ This repository contains my solutions of Codeforces problems. They are in C++ la
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| 104 | 1766 A | Extremely Round | [Question](https://codeforces.com/problemset/problem/1766/A) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1766%20A%20-%20Extremely%20Round)
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| 105 | 1773 F | Football | [Question](https://codeforces.com/problemset/problem/1773/F) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1773%20F%20-%20Football)
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| 106 | 1791 B | Following Directions | [Question](https://codeforces.com/problemset/problem/1791/B) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1791%20B%20-%20Following%20Directions)
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| 107 | 1792 A | Gaming Forces | [Question](https://codeforces.com/problemset/problem/1792/A) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1792%20A%20-%20Gaming%20Forces)
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| 108 | 1795 B | Ideal Point | [Question](https://codeforces.com/problemset/problem/1795/B) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1795%20B%20-%20Ideal%20Point)
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| 109 | 1800 A | Is It a Cat | [Question](https://codeforces.com/problemset/problem/1800/A) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1800%20A%20-%20Is%20It%20a%20Cat)
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| 110 | 1805 A | We Need the Zero | [Question](https://codeforces.com/problemset/problem/1805/A) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1805%20A%20-%20We%20Need%20the%20Zero)
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| 111 | 1806 A | Walking Master | [Question](https://codeforces.com/problemset/problem/1806/A) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1806%20A%20-%20Walking%20Master)
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| 112 | 1811 A | Insert Digit | [Question](https://codeforces.com/problemset/problem/1811/A) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1811%20A%20-%20Insert%20Digit)
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| 113 | 1814 A | Coins | [Question](https://codeforces.com/problemset/problem/1814/A) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1814%20A%20-%20Coins)
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| 114 | 1818 B | Indivisible | [Question](https://codeforces.com/problemset/problem/1818/B) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1818%20B%20-%20Indivisible)
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| 115 | 1822 A | TubeTube Feed | [Question](https://codeforces.com/problemset/problem/1822/A) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1822%20A%20-%20TubeTube%20Feed)
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| 116 | 1822 C | Bun Lover | [Question](https://codeforces.com/problemset/problem/1822/C) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1822%20C%20-%20Bun%20Lover)
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| 117 | 1828 A | Divisible Array | [Question](https://codeforces.com/problemset/problem/1828/A) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1828%20A%20-%20Divisible%20Array)
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| 118 | 1828 B | Permutation Swap | [Question](https://codeforces.com/problemset/problem/1828/B) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1828%20B%20-%20Permutation%20Swap)
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| 119 | 1829 A | Love Story | [Question](https://codeforces.com/problemset/problem/1829/A) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1829%20A%20-%20Love%20Story)
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| 120 | 1829 B | Blank Spaces | [Question](https://codeforces.com/problemset/problem/1829/B) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1829%20B%20-%20Blank%20Spaces)
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| 121 | 1829 C | Mr. Perfectly Fine | [Question](https://codeforces.com/problemset/problem/1829/C) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1829%20C%20-%20Mr.%20Perfectly%20Fine)
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| 122 | 1829 D | Gold Rush | [Question](https://codeforces.com/problemset/problem/1829/D) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1829%20D%20-%20Gold%20Rush)
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| 123 | 1831 A | Twin Permutations | [Question](https://codeforces.com/problemset/problem/1831/A) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1831%20A%20-%20Twin%20Permutations)
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| 124 | 1832 A | New Palindrome | [Question](https://codeforces.com/problemset/problem/1832/A) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1832%20A%20-%20New%20Palindrome)
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| 125 | 1833 A | Musical Puzzle | [Question](https://codeforces.com/problemset/problem/1833/A) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1833%20A%20-%20Musical%20Puzzle)
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| 126 | 1833 B | Restore the Weather | [Question](https://codeforces.com/problemset/problem/1833/B) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1833%20B%20-%20Restore%20the%20Weather)
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| 127 | 1833 C | Vlad Building Beautiful Array | [Question](https://codeforces.com/problemset/problem/1833/C) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1833%20C%20-%20Vlad%20Building%20Beautiful%20Array)
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| 128 | 1834 A | Unit Array | [Question](https://codeforces.com/problemset/problem/1834/A) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1834%20A%20-%20Unit%20Array)
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| 129 | 1837 A | Grasshopper on a Line | [Question](https://codeforces.com/problemset/problem/1837/A) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1837%20A%20-%20Grasshopper%20on%20a%20Line)
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| 130 | 1837 B | Comparison String | [Question](https://codeforces.com/problemset/problem/1837/B) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1837%20B%20-%20Comparison%20String)
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| 131 | 1841 B | Keep it Beautiful | [Question](https://codeforces.com/problemset/problem/1841/B) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1841%20B%20-%20Keep%20it%20Beautiful)
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| 132 | 1843 A | Sasha and Array Coloring | [Question](https://codeforces.com/problemset/problem/1843/A) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1843%20A%20-%20Sasha%20and%20Array%20Coloring)
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| 133 | 1843 B | Long Long | [Question](https://codeforces.com/problemset/problem/1843/B) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1843%20B%20-%20Long%20Long)
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| 134 | 1844 A | Subtraction Game | [Question](https://codeforces.com/problemset/problem/1844/A) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1844%20A%20-%20Subtraction%20Game)
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| 135 | 1845 A | Forbidden Integer | [Question](https://codeforces.com/problemset/problem/1845/A) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1845%20A%20-%20Forbidden%20Integer)
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| 136 | 1846 A | Rudolph and Cut the Rope | [Question](https://codeforces.com/problemset/problem/1846/A) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1846%20A%20-%20Rudolph%20and%20Cut%20the%20Rope)
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| 137 | 1846 B | Rudolph and Tic-Tac-Toe | [Question](https://codeforces.com/problemset/problem/1846/B) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1846%20B%20-%20Rudolph%20and%20Tic-Tac-Toe)
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| 138 | 1846 C | Rudolf and the Another Competition | [Question](https://codeforces.com/problemset/problem/1846/C) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1846%20C%20-%20Rudolf%20and%20the%20Another%20Competition)
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| 139 | 1848 A | Vika and Her Friends | [Question](https://codeforces.com/problemset/problem/1848/A) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1848%20A%20-%20Vika%20and%20Her%20Friends)
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| 140 | 1849 A | Morning Sandwich | [Question](https://codeforces.com/problemset/problem/1849/A) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1849%20A%20-%20Morning%20Sandwich)
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| 141 | 1849 B | Monsters | [Question](https://codeforces.com/problemset/problem/1849/B) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1849%20B%20-%20Monsters)
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| 142 | 1850 A | To My Critics | [Question](https://codeforces.com/problemset/problem/1850/A) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1850%20A%20-%20To%20My%20Critics)
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| 143 | 1850 B | Ten Words of Wisdom | [Question](https://codeforces.com/problemset/problem/1850/B) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1850%20B%20-%20Ten%20Words%20of%20Wisdom)
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| 144 | 1850 C | Word on the Paper | [Question](https://codeforces.com/problemset/problem/1850/C) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1850%20C%20-%20Word%20on%20the%20Paper)
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| 145 | 1850 D | Balanced Round | [Question](https://codeforces.com/problemset/problem/1850/D) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1850%20D%20-%20Balanced%20Round)
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| 146 | 1851 A | Escalator Conversations | [Question](https://codeforces.com/problemset/problem/1851/A) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1851%20A%20-%20Escalator%20Conversations)
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| 147 | 1851 B | Parity Sort | [Question](https://codeforces.com/problemset/problem/1851/B) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1851%20B%20-%20Parity%20Sort)
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| 148 | 1851 C | Tiles Comeback | [Question](https://codeforces.com/problemset/problem/1851/C) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1851%20C%20-%20Tiles%20Comeback)
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| 149 | 1853 A | Desorting | [Question](https://codeforces.com/problemset/problem/1853/A) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1853%20A%20-%20Desorting)
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| 150 | 1855 A | Dalton the Teacher | [Question](https://codeforces.com/problemset/problem/1855/A) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1855%20A%20-%20Dalton%20the%20Teacher)
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| 151 | 1855 B | Longest Divisors Interval | [Question](https://codeforces.com/problemset/problem/1855/B) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1855%20B%20-%20Longest%20Divisors%20Interval)
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| 152 | 1856 B | Good Arrays | [Question](https://codeforces.com/problemset/problem/1856/B) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1856%20B%20-%20Good%20Arrays)
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| 153 | 1857 A | Array Coloring | [Question](https://codeforces.com/problemset/problem/1857/A) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1857%20A%20-%20%20Array%20Coloring)
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| 154 | 1857 B | Maximum Rounding | [Question](https://codeforces.com/problemset/problem/1857/B) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1857%20B%20-%20Maximum%20Rounding)
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| 155 | 1857 C | Assembly via Minimums | [Question](https://codeforces.com/problemset/problem/1857/C) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1857%20C%20-%20Assembly%20via%20Minimums)
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| 156 | 1858 A | Buttons | [Question](https://codeforces.com/problemset/problem/1858/A) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1858%20A%20-%20Buttons)
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| 157 | 1859 A | United We Stand | [Question](https://codeforces.com/problemset/problem/1859/A) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1859%20A%20-%20United%20We%20Stand)
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| 158 | 1860 A | Not a Substring | [Question](https://codeforces.com/problemset/problem/1860/A) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1860%20A%20-%20Not%20a%20Substring)
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| 159 | 1862 A | Gift Carpet | [Question](https://codeforces.com/problemset/problem/1862/A) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1862%20A%20-%20Gift%20Carpet)
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| 160 | 1862 B | Sequence Game | [Question](https://codeforces.com/problemset/problem/1862/B) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1862%20B%20-%20Sequence%20Game)
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| 161 | 1863 A | Channel | [Question](https://codeforces.com/problemset/problem/1863/A) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1863%20A%20-%20Channel)
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| 162 | 1864 A | Increasing and Decreasing | [Question](https://codeforces.com/problemset/problem/1864/A) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1864%20A%20-%20Increasing%20and%20Decreasing)
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| 163 | 1866 A | Ambitious Kid | [Question](https://codeforces.com/problemset/problem/1866/A) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1866%20A%20-%20Ambitious%20Kid)
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| 164 | 1869 A | Make It Zero | [Question](https://codeforces.com/problemset/problem/1869/A) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1869%20A%20-%20Make%20It%20Zero)
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| 165 | 1870 A | MEXanized Array | [Question](https://codeforces.com/problemset/problem/1870/A) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1870%20A%20-%20MEXanized%20Array)
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| 166 | 1872 A | Two Vessels | [Question](https://codeforces.com/problemset/problem/1872/A) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1872%20A%20-%20Two%20Vessels)
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| 167 | 1872 B | The Corridor or There and Back Again | [Question](https://codeforces.com/problemset/problem/1872/B) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1872%20B%20-%20The%20Corridor%20or%20There%20and%20Back%20Again)
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| 168 | 1872 C | Non-coprime Split | [Question](https://codeforces.com/problemset/problem/1872/C) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1872%20C%20-%20Non-coprime%20Split)
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| 169 | 1873 A | Short Sort | [Question](https://codeforces.com/problemset/problem/1873/A) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1873%20A%20-%20Short%20Sort)
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| 170 | 1873 B | Good Kid | [Question](https://codeforces.com/problemset/problem/1873/B) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1873%20B%20-%20Good%20Kid)
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| 171 | 1873 C | Target Practice | [Question](https://codeforces.com/problemset/problem/1873/C) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1873%20C%20-%20Target%20Practice)
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| 172 | 1873 D | 1D Eraser | [Question](https://codeforces.com/problemset/problem/1873/D) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1873%20D%20-%201D%20Eraser)
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| 173 | 1875 A | Jellyfish and Undertale | [Question](https://codeforces.com/problemset/problem/1875/A) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1875%20A%20-%20Jellyfish%20and%20Undertale)
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| 174 | 1877 A | Goals of Victory | [Question](https://codeforces.com/problemset/problem/1877/A) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1877%20A%20-%20Goals%20of%20Victory)
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| 175 | 1878 A | How Much Does Daytona Cost | [Question](https://codeforces.com/problemset/problem/1878/A) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1878%20A%20-%20How%20Much%20Does%20Daytona%20Cost)
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| 176 | 1878 B | Aleksa and Stack | [Question](https://codeforces.com/problemset/problem/1878/B) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1878%20B%20-%20Aleksa%20and%20Stack)
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| 177 | 1878 C | Vasilije in Cacak | [Question](https://codeforces.com/problemset/problem/1878/C) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1878%20C%20-%20Vasilije%20in%20Cacak)
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| 178 | 1879 A | Rigged! | [Question](https://codeforces.com/problemset/problem/1879/A) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1879%20A%20-%20Rigged!)
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| 179 | 1879 B | Chips on the Board | [Question](https://codeforces.com/problemset/problem/1879/B) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1879%20B%20-%20Chips%20on%20the%20Board)
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| 180 | 1881 A | Don't Try to Count | [Question](https://codeforces.com/problemset/problem/1881/A) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1881%20A%20-%20Don't%20Try%20to%20Count)
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| 181 | 1881 B | Three Threadlets | [Question](https://codeforces.com/problemset/problem/1881/B) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1881%20B%20-%20Three%20Threadlets)
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| 182 | 1881 C | Perfect Square | [Question](https://codeforces.com/problemset/problem/1881/C) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1881%20C%20-%20Perfect%20Square)
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| 183 | 1883 B | Chemistry | [Question](https://codeforces.com/problemset/problem/1883/B) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1883%20B%20-%20Chemistry)
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| 184 | 1894 A | Secret Sport | [Question](https://codeforces.com/problemset/problem/1894/A) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1894%20A%20-%20Secret%20Sport)
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| 185 | 1895 A | Treasure Chest | [Question](https://codeforces.com/problemset/problem/1895/A) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1895%20A%20-%20Treasure%20Chest)
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| 186 | 1895 B | Points and Minimum Distance | [Question](https://codeforces.com/problemset/problem/1895/B) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1895%20B%20-%20Points%20and%20Minimum%20Distance)
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| 187 | 1896 A | Jagged Swaps | [Question](https://codeforces.com/problemset/problem/1896/A) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1896%20A%20-%20Jagged%20Swaps)
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| 188 | 1896 B | AB Flipping | [Question](https://codeforces.com/problemset/problem/1896/B) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1896%20B%20-%20AB%20Flipping)
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| 189 | 1898 A | Milica and String | [Question](https://codeforces.com/problemset/problem/1898/A) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1898%20A%20-%20Milica%20and%20String)
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| 190 | 1899 A | Game with Integers | [Question](https://codeforces.com/problemset/problem/1899/A) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1899%20A%20-%20Game%20with%20Integers)
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| 191 | 1900 A | Cover in Water | [Question](https://codeforces.com/problemset/problem/1900/A) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1900%20A%20-%20Cover%20in%20Water)
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| 192 | 1900 B | Laura and Operations | [Question](https://codeforces.com/problemset/problem/1900/B) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1900%20B%20-%20Laura%20and%20Operations)
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| 193 | 1901 A | Line Trip | [Question](https://codeforces.com/problemset/problem/1901/A) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1901%20A%20-%20Line%20Trip)
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| 194 | 1902 A | Binary Imbalance | [Question](https://codeforces.com/problemset/problem/1902/A) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1902%20A%20-%20Binary%20Imbalance)
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| 195 | 1903 A | Halloumi Boxes | [Question](https://codeforces.com/problemset/problem/1903/A) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1903%20A%20-%20Halloumi%20Boxes)
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| 196 | 1904 A | Forked! | [Question](https://codeforces.com/problemset/problem/1904/A) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1904%20A%20-%20Forked!)
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| 197 | 1904 B | Collecting Game | [Question](https://codeforces.com/problemset/problem/1904/B) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1904%20B%20-%20Collecting%20Game)
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| 198 | 1905 A | Constructive Problems | [Question](https://codeforces.com/problemset/problem/1905/A) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1905%20A%20-%20Constructive%20Problems)
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| 199 | 1905 B | Begginer's Zelda | [Question](https://codeforces.com/problemset/problem/1905/B) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1905%20B%20-%20Begginer's%20Zelda)
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| 200 | 1905 C | Largest Subsequence | [Question](https://codeforces.com/problemset/problem/1905/C) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1905%20C%20-%20Largest%20Subsequence)
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| 201 | 1907 A | Rook | [Question](https://codeforces.com/problemset/problem/1907/A) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1907%20A%20-%20Rook)
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| 202 | 1907 B | YetnotherrokenKeoard | [Question](https://codeforces.com/problemset/problem/1907/B) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1907%20B%20-%20YetnotherrokenKeoard)
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| 203 | 1907 C | Removal of Unattractive Pairs | [Question](https://codeforces.com/problemset/problem/1907/C) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1907%20C%20-%20Removal%20of%20Unattractive%20Pairs)
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| 204 | 1909 A | Distinct Buttons | [Question](https://codeforces.com/problemset/problem/1909/A) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1909%20A%20-%20Distinct%20Buttons)
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| 205 | 1912 L | LOL Lovers | [Question](https://codeforces.com/problemset/problem/1912/L) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1912%20L%20-%20LOL%20Lovers)
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| 206 | 1913 A | Rating Increase | [Question](https://codeforces.com/problemset/problem/1913/A) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1913%20A%20-%20Rating%20Increase)
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| 207 | 1913 B | Swap and Delete | [Question](https://codeforces.com/problemset/problem/1913/B) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1913%20B%20-%20Swap%20and%20Delete)
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| 208 | 1913 C | Game with Multiset | [Question](https://codeforces.com/problemset/problem/1913/C) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1913%20C%20-%20Game%20with%20Multiset)
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| 209 | 1914 A | Problemsolving Log | [Question](https://codeforces.com/problemset/problem/1914/A) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1914%20A%20-%20Problemsolving%20Log)
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| 210 | 1914 B | Preparing for the Contest | [Question](https://codeforces.com/problemset/problem/1914/B) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1914%20B%20-%20Preparing%20for%20the%20Contest)
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| 211 | 1914 C | Quests | [Question](https://codeforces.com/problemset/problem/1914/C) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1914%20C%20-%20Quests)
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| 212 | 1914 D | Three Activities | [Question](https://codeforces.com/problemset/problem/1914/D) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1914%20D%20-%20Three%20Activities)
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| 213 | 1914 E1 | Game with Marbles (Easy Version) | [Question](https://codeforces.com/problemset/problem/1914/E1) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1914%20E1%20-%20Game%20with%20Marbles%20(Easy%20Version))
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| 214 | 1914 E2 | Game with Marbles (Hard Version) | [Question](https://codeforces.com/problemset/problem/1914/E2) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1914%20E2%20-%20Game%20with%20Marbles%20(Hard%20Version))
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| 215 | 1915 A | Odd One Out | [Question](https://codeforces.com/problemset/problem/1915/A) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1915%20A%20-%20Odd%20One%20Out)
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| 216 | 1915 B | Not Quite Latin Square | [Question](https://codeforces.com/problemset/problem/1915/B) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1915%20B%20-%20Not%20Quite%20Latin%20Square)
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| 217 | 1915 C | Can I Square | [Question](https://codeforces.com/problemset/problem/1915/C) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1915%20C%20-%20Can%20I%20Square)
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| 218 | 1915 D | Unnatural Language Processing | [Question](https://codeforces.com/problemset/problem/1915/D) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1915%20D%20-%20Unnatural%20Language%20Processing)
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| 219 | 1915 E | Romantic Glasses | [Question](https://codeforces.com/problemset/problem/1915/E) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1915%20E%20-%20Romantic%20Glasses)
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| 220 | 1916 A | 2023 | [Question](https://codeforces.com/problemset/problem/1916/A) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1916%20A%20-%202023)
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| 221 | 1916 B | Two Divisors | [Question](https://codeforces.com/problemset/problem/1916/B) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1916%20B%20-%20Two%20Divisors)
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| 222 | 1916 C | Training Before the Olympiad | [Question](https://codeforces.com/problemset/problem/1916/C) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1916%20C%20-%20Training%20Before%20the%20Olympiad)
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| 223 | 1916 D | Mathematical Problem | [Question](https://codeforces.com/problemset/problem/1916/D) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1916%20D%20-%20Mathematical%20Problem)
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| 224 | 1917 A | Least Product | [Question](https://codeforces.com/problemset/problem/1917/A) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1917%20A%20-%20Least%20Product)
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| 225 | 1917 B | Erase First or Second Letter | [Question](https://codeforces.com/problemset/problem/1917/B) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1917%20B%20-%20Erase%20First%20or%20Second%20Letter)
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| 107 | 1791 C | Prepend and Append | [Question](https://codeforces.com/problemset/problem/1791/C) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1791%20C%20-%20Prepend%20and%20Append)
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| 108 | 1792 A | Gaming Forces | [Question](https://codeforces.com/problemset/problem/1792/A) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1792%20A%20-%20Gaming%20Forces)
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| 109 | 1795 B | Ideal Point | [Question](https://codeforces.com/problemset/problem/1795/B) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1795%20B%20-%20Ideal%20Point)
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| 110 | 1800 A | Is It a Cat | [Question](https://codeforces.com/problemset/problem/1800/A) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1800%20A%20-%20Is%20It%20a%20Cat)
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| 111 | 1805 A | We Need the Zero | [Question](https://codeforces.com/problemset/problem/1805/A) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1805%20A%20-%20We%20Need%20the%20Zero)
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| 112 | 1806 A | Walking Master | [Question](https://codeforces.com/problemset/problem/1806/A) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1806%20A%20-%20Walking%20Master)
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| 113 | 1811 A | Insert Digit | [Question](https://codeforces.com/problemset/problem/1811/A) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1811%20A%20-%20Insert%20Digit)
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| 114 | 1814 A | Coins | [Question](https://codeforces.com/problemset/problem/1814/A) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1814%20A%20-%20Coins)
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| 115 | 1818 B | Indivisible | [Question](https://codeforces.com/problemset/problem/1818/B) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1818%20B%20-%20Indivisible)
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| 116 | 1822 A | TubeTube Feed | [Question](https://codeforces.com/problemset/problem/1822/A) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1822%20A%20-%20TubeTube%20Feed)
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| 117 | 1822 C | Bun Lover | [Question](https://codeforces.com/problemset/problem/1822/C) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1822%20C%20-%20Bun%20Lover)
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| 118 | 1828 A | Divisible Array | [Question](https://codeforces.com/problemset/problem/1828/A) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1828%20A%20-%20Divisible%20Array)
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| 119 | 1828 B | Permutation Swap | [Question](https://codeforces.com/problemset/problem/1828/B) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1828%20B%20-%20Permutation%20Swap)
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| 120 | 1829 A | Love Story | [Question](https://codeforces.com/problemset/problem/1829/A) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1829%20A%20-%20Love%20Story)
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| 121 | 1829 B | Blank Spaces | [Question](https://codeforces.com/problemset/problem/1829/B) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1829%20B%20-%20Blank%20Spaces)
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| 122 | 1829 C | Mr. Perfectly Fine | [Question](https://codeforces.com/problemset/problem/1829/C) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1829%20C%20-%20Mr.%20Perfectly%20Fine)
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| 123 | 1829 D | Gold Rush | [Question](https://codeforces.com/problemset/problem/1829/D) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1829%20D%20-%20Gold%20Rush)
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| 124 | 1831 A | Twin Permutations | [Question](https://codeforces.com/problemset/problem/1831/A) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1831%20A%20-%20Twin%20Permutations)
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| 125 | 1832 A | New Palindrome | [Question](https://codeforces.com/problemset/problem/1832/A) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1832%20A%20-%20New%20Palindrome)
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| 126 | 1833 A | Musical Puzzle | [Question](https://codeforces.com/problemset/problem/1833/A) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1833%20A%20-%20Musical%20Puzzle)
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| 127 | 1833 B | Restore the Weather | [Question](https://codeforces.com/problemset/problem/1833/B) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1833%20B%20-%20Restore%20the%20Weather)
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| 128 | 1833 C | Vlad Building Beautiful Array | [Question](https://codeforces.com/problemset/problem/1833/C) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1833%20C%20-%20Vlad%20Building%20Beautiful%20Array)
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| 129 | 1834 A | Unit Array | [Question](https://codeforces.com/problemset/problem/1834/A) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1834%20A%20-%20Unit%20Array)
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| 130 | 1837 A | Grasshopper on a Line | [Question](https://codeforces.com/problemset/problem/1837/A) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1837%20A%20-%20Grasshopper%20on%20a%20Line)
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| 131 | 1837 B | Comparison String | [Question](https://codeforces.com/problemset/problem/1837/B) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1837%20B%20-%20Comparison%20String)
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| 132 | 1841 B | Keep it Beautiful | [Question](https://codeforces.com/problemset/problem/1841/B) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1841%20B%20-%20Keep%20it%20Beautiful)
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| 133 | 1843 A | Sasha and Array Coloring | [Question](https://codeforces.com/problemset/problem/1843/A) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1843%20A%20-%20Sasha%20and%20Array%20Coloring)
|
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| 134 | 1843 B | Long Long | [Question](https://codeforces.com/problemset/problem/1843/B) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1843%20B%20-%20Long%20Long)
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| 135 | 1844 A | Subtraction Game | [Question](https://codeforces.com/problemset/problem/1844/A) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1844%20A%20-%20Subtraction%20Game)
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| 136 | 1845 A | Forbidden Integer | [Question](https://codeforces.com/problemset/problem/1845/A) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1845%20A%20-%20Forbidden%20Integer)
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| 137 | 1846 A | Rudolph and Cut the Rope | [Question](https://codeforces.com/problemset/problem/1846/A) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1846%20A%20-%20Rudolph%20and%20Cut%20the%20Rope)
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| 138 | 1846 B | Rudolph and Tic-Tac-Toe | [Question](https://codeforces.com/problemset/problem/1846/B) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1846%20B%20-%20Rudolph%20and%20Tic-Tac-Toe)
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| 139 | 1846 C | Rudolf and the Another Competition | [Question](https://codeforces.com/problemset/problem/1846/C) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1846%20C%20-%20Rudolf%20and%20the%20Another%20Competition)
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| 140 | 1848 A | Vika and Her Friends | [Question](https://codeforces.com/problemset/problem/1848/A) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1848%20A%20-%20Vika%20and%20Her%20Friends)
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| 141 | 1849 A | Morning Sandwich | [Question](https://codeforces.com/problemset/problem/1849/A) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1849%20A%20-%20Morning%20Sandwich)
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| 142 | 1849 B | Monsters | [Question](https://codeforces.com/problemset/problem/1849/B) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1849%20B%20-%20Monsters)
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| 143 | 1850 A | To My Critics | [Question](https://codeforces.com/problemset/problem/1850/A) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1850%20A%20-%20To%20My%20Critics)
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| 144 | 1850 B | Ten Words of Wisdom | [Question](https://codeforces.com/problemset/problem/1850/B) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1850%20B%20-%20Ten%20Words%20of%20Wisdom)
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| 145 | 1850 C | Word on the Paper | [Question](https://codeforces.com/problemset/problem/1850/C) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1850%20C%20-%20Word%20on%20the%20Paper)
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| 146 | 1850 D | Balanced Round | [Question](https://codeforces.com/problemset/problem/1850/D) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1850%20D%20-%20Balanced%20Round)
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| 147 | 1851 A | Escalator Conversations | [Question](https://codeforces.com/problemset/problem/1851/A) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1851%20A%20-%20Escalator%20Conversations)
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| 148 | 1851 B | Parity Sort | [Question](https://codeforces.com/problemset/problem/1851/B) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1851%20B%20-%20Parity%20Sort)
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| 149 | 1851 C | Tiles Comeback | [Question](https://codeforces.com/problemset/problem/1851/C) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1851%20C%20-%20Tiles%20Comeback)
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| 150 | 1853 A | Desorting | [Question](https://codeforces.com/problemset/problem/1853/A) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1853%20A%20-%20Desorting)
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| 151 | 1855 A | Dalton the Teacher | [Question](https://codeforces.com/problemset/problem/1855/A) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1855%20A%20-%20Dalton%20the%20Teacher)
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| 152 | 1855 B | Longest Divisors Interval | [Question](https://codeforces.com/problemset/problem/1855/B) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1855%20B%20-%20Longest%20Divisors%20Interval)
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| 153 | 1856 B | Good Arrays | [Question](https://codeforces.com/problemset/problem/1856/B) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1856%20B%20-%20Good%20Arrays)
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| 154 | 1857 A | Array Coloring | [Question](https://codeforces.com/problemset/problem/1857/A) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1857%20A%20-%20%20Array%20Coloring)
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| 155 | 1857 B | Maximum Rounding | [Question](https://codeforces.com/problemset/problem/1857/B) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1857%20B%20-%20Maximum%20Rounding)
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| 156 | 1857 C | Assembly via Minimums | [Question](https://codeforces.com/problemset/problem/1857/C) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1857%20C%20-%20Assembly%20via%20Minimums)
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| 157 | 1858 A | Buttons | [Question](https://codeforces.com/problemset/problem/1858/A) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1858%20A%20-%20Buttons)
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| 158 | 1859 A | United We Stand | [Question](https://codeforces.com/problemset/problem/1859/A) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1859%20A%20-%20United%20We%20Stand)
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| 159 | 1860 A | Not a Substring | [Question](https://codeforces.com/problemset/problem/1860/A) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1860%20A%20-%20Not%20a%20Substring)
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| 160 | 1862 A | Gift Carpet | [Question](https://codeforces.com/problemset/problem/1862/A) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1862%20A%20-%20Gift%20Carpet)
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| 161 | 1862 B | Sequence Game | [Question](https://codeforces.com/problemset/problem/1862/B) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1862%20B%20-%20Sequence%20Game)
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| 162 | 1863 A | Channel | [Question](https://codeforces.com/problemset/problem/1863/A) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1863%20A%20-%20Channel)
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| 163 | 1864 A | Increasing and Decreasing | [Question](https://codeforces.com/problemset/problem/1864/A) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1864%20A%20-%20Increasing%20and%20Decreasing)
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| 164 | 1866 A | Ambitious Kid | [Question](https://codeforces.com/problemset/problem/1866/A) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1866%20A%20-%20Ambitious%20Kid)
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| 165 | 1869 A | Make It Zero | [Question](https://codeforces.com/problemset/problem/1869/A) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1869%20A%20-%20Make%20It%20Zero)
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| 166 | 1870 A | MEXanized Array | [Question](https://codeforces.com/problemset/problem/1870/A) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1870%20A%20-%20MEXanized%20Array)
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| 167 | 1872 A | Two Vessels | [Question](https://codeforces.com/problemset/problem/1872/A) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1872%20A%20-%20Two%20Vessels)
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| 168 | 1872 B | The Corridor or There and Back Again | [Question](https://codeforces.com/problemset/problem/1872/B) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1872%20B%20-%20The%20Corridor%20or%20There%20and%20Back%20Again)
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| 169 | 1872 C | Non-coprime Split | [Question](https://codeforces.com/problemset/problem/1872/C) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1872%20C%20-%20Non-coprime%20Split)
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| 170 | 1873 A | Short Sort | [Question](https://codeforces.com/problemset/problem/1873/A) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1873%20A%20-%20Short%20Sort)
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| 171 | 1873 B | Good Kid | [Question](https://codeforces.com/problemset/problem/1873/B) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1873%20B%20-%20Good%20Kid)
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| 172 | 1873 C | Target Practice | [Question](https://codeforces.com/problemset/problem/1873/C) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1873%20C%20-%20Target%20Practice)
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| 173 | 1873 D | 1D Eraser | [Question](https://codeforces.com/problemset/problem/1873/D) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1873%20D%20-%201D%20Eraser)
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| 174 | 1875 A | Jellyfish and Undertale | [Question](https://codeforces.com/problemset/problem/1875/A) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1875%20A%20-%20Jellyfish%20and%20Undertale)
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| 175 | 1877 A | Goals of Victory | [Question](https://codeforces.com/problemset/problem/1877/A) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1877%20A%20-%20Goals%20of%20Victory)
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| 176 | 1878 A | How Much Does Daytona Cost | [Question](https://codeforces.com/problemset/problem/1878/A) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1878%20A%20-%20How%20Much%20Does%20Daytona%20Cost)
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| 177 | 1878 B | Aleksa and Stack | [Question](https://codeforces.com/problemset/problem/1878/B) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1878%20B%20-%20Aleksa%20and%20Stack)
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| 178 | 1878 C | Vasilije in Cacak | [Question](https://codeforces.com/problemset/problem/1878/C) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1878%20C%20-%20Vasilije%20in%20Cacak)
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| 179 | 1879 A | Rigged! | [Question](https://codeforces.com/problemset/problem/1879/A) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1879%20A%20-%20Rigged!)
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| 180 | 1879 B | Chips on the Board | [Question](https://codeforces.com/problemset/problem/1879/B) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1879%20B%20-%20Chips%20on%20the%20Board)
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| 181 | 1881 A | Don't Try to Count | [Question](https://codeforces.com/problemset/problem/1881/A) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1881%20A%20-%20Don't%20Try%20to%20Count)
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| 182 | 1881 B | Three Threadlets | [Question](https://codeforces.com/problemset/problem/1881/B) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1881%20B%20-%20Three%20Threadlets)
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| 183 | 1881 C | Perfect Square | [Question](https://codeforces.com/problemset/problem/1881/C) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1881%20C%20-%20Perfect%20Square)
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| 184 | 1883 B | Chemistry | [Question](https://codeforces.com/problemset/problem/1883/B) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1883%20B%20-%20Chemistry)
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| 185 | 1894 A | Secret Sport | [Question](https://codeforces.com/problemset/problem/1894/A) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1894%20A%20-%20Secret%20Sport)
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| 186 | 1895 A | Treasure Chest | [Question](https://codeforces.com/problemset/problem/1895/A) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1895%20A%20-%20Treasure%20Chest)
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| 187 | 1895 B | Points and Minimum Distance | [Question](https://codeforces.com/problemset/problem/1895/B) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1895%20B%20-%20Points%20and%20Minimum%20Distance)
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| 188 | 1896 A | Jagged Swaps | [Question](https://codeforces.com/problemset/problem/1896/A) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1896%20A%20-%20Jagged%20Swaps)
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| 189 | 1896 B | AB Flipping | [Question](https://codeforces.com/problemset/problem/1896/B) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1896%20B%20-%20AB%20Flipping)
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| 190 | 1898 A | Milica and String | [Question](https://codeforces.com/problemset/problem/1898/A) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1898%20A%20-%20Milica%20and%20String)
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| 191 | 1899 A | Game with Integers | [Question](https://codeforces.com/problemset/problem/1899/A) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1899%20A%20-%20Game%20with%20Integers)
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| 192 | 1900 A | Cover in Water | [Question](https://codeforces.com/problemset/problem/1900/A) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1900%20A%20-%20Cover%20in%20Water)
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| 193 | 1900 B | Laura and Operations | [Question](https://codeforces.com/problemset/problem/1900/B) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1900%20B%20-%20Laura%20and%20Operations)
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| 194 | 1901 A | Line Trip | [Question](https://codeforces.com/problemset/problem/1901/A) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1901%20A%20-%20Line%20Trip)
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| 195 | 1902 A | Binary Imbalance | [Question](https://codeforces.com/problemset/problem/1902/A) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1902%20A%20-%20Binary%20Imbalance)
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| 196 | 1903 A | Halloumi Boxes | [Question](https://codeforces.com/problemset/problem/1903/A) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1903%20A%20-%20Halloumi%20Boxes)
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| 197 | 1904 A | Forked! | [Question](https://codeforces.com/problemset/problem/1904/A) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1904%20A%20-%20Forked!)
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| 198 | 1904 B | Collecting Game | [Question](https://codeforces.com/problemset/problem/1904/B) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1904%20B%20-%20Collecting%20Game)
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| 199 | 1905 A | Constructive Problems | [Question](https://codeforces.com/problemset/problem/1905/A) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1905%20A%20-%20Constructive%20Problems)
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| 200 | 1905 B | Begginer's Zelda | [Question](https://codeforces.com/problemset/problem/1905/B) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1905%20B%20-%20Begginer's%20Zelda)
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| 201 | 1905 C | Largest Subsequence | [Question](https://codeforces.com/problemset/problem/1905/C) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1905%20C%20-%20Largest%20Subsequence)
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| 202 | 1907 A | Rook | [Question](https://codeforces.com/problemset/problem/1907/A) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1907%20A%20-%20Rook)
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| 203 | 1907 B | YetnotherrokenKeoard | [Question](https://codeforces.com/problemset/problem/1907/B) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1907%20B%20-%20YetnotherrokenKeoard)
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| 204 | 1907 C | Removal of Unattractive Pairs | [Question](https://codeforces.com/problemset/problem/1907/C) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1907%20C%20-%20Removal%20of%20Unattractive%20Pairs)
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| 205 | 1909 A | Distinct Buttons | [Question](https://codeforces.com/problemset/problem/1909/A) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1909%20A%20-%20Distinct%20Buttons)
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| 206 | 1912 L | LOL Lovers | [Question](https://codeforces.com/problemset/problem/1912/L) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1912%20L%20-%20LOL%20Lovers)
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| 207 | 1913 A | Rating Increase | [Question](https://codeforces.com/problemset/problem/1913/A) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1913%20A%20-%20Rating%20Increase)
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| 208 | 1913 B | Swap and Delete | [Question](https://codeforces.com/problemset/problem/1913/B) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1913%20B%20-%20Swap%20and%20Delete)
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| 209 | 1913 C | Game with Multiset | [Question](https://codeforces.com/problemset/problem/1913/C) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1913%20C%20-%20Game%20with%20Multiset)
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| 210 | 1914 A | Problemsolving Log | [Question](https://codeforces.com/problemset/problem/1914/A) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1914%20A%20-%20Problemsolving%20Log)
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| 211 | 1914 B | Preparing for the Contest | [Question](https://codeforces.com/problemset/problem/1914/B) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1914%20B%20-%20Preparing%20for%20the%20Contest)
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| 212 | 1914 C | Quests | [Question](https://codeforces.com/problemset/problem/1914/C) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1914%20C%20-%20Quests)
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| 213 | 1914 D | Three Activities | [Question](https://codeforces.com/problemset/problem/1914/D) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1914%20D%20-%20Three%20Activities)
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| 214 | 1914 E1 | Game with Marbles (Easy Version) | [Question](https://codeforces.com/problemset/problem/1914/E1) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1914%20E1%20-%20Game%20with%20Marbles%20(Easy%20Version))
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| 215 | 1914 E2 | Game with Marbles (Hard Version) | [Question](https://codeforces.com/problemset/problem/1914/E2) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1914%20E2%20-%20Game%20with%20Marbles%20(Hard%20Version))
|
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| 216 | 1915 A | Odd One Out | [Question](https://codeforces.com/problemset/problem/1915/A) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1915%20A%20-%20Odd%20One%20Out)
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| 217 | 1915 B | Not Quite Latin Square | [Question](https://codeforces.com/problemset/problem/1915/B) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1915%20B%20-%20Not%20Quite%20Latin%20Square)
|
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| 218 | 1915 C | Can I Square | [Question](https://codeforces.com/problemset/problem/1915/C) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1915%20C%20-%20Can%20I%20Square)
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| 219 | 1915 D | Unnatural Language Processing | [Question](https://codeforces.com/problemset/problem/1915/D) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1915%20D%20-%20Unnatural%20Language%20Processing)
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| 220 | 1915 E | Romantic Glasses | [Question](https://codeforces.com/problemset/problem/1915/E) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1915%20E%20-%20Romantic%20Glasses)
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| 221 | 1916 A | 2023 | [Question](https://codeforces.com/problemset/problem/1916/A) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1916%20A%20-%202023)
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| 222 | 1916 B | Two Divisors | [Question](https://codeforces.com/problemset/problem/1916/B) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1916%20B%20-%20Two%20Divisors)
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| 223 | 1916 C | Training Before the Olympiad | [Question](https://codeforces.com/problemset/problem/1916/C) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1916%20C%20-%20Training%20Before%20the%20Olympiad)
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| 224 | 1916 D | Mathematical Problem | [Question](https://codeforces.com/problemset/problem/1916/D) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1916%20D%20-%20Mathematical%20Problem)
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| 225 | 1917 A | Least Product | [Question](https://codeforces.com/problemset/problem/1917/A) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1917%20A%20-%20Least%20Product)
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| 226 | 1917 B | Erase First or Second Letter | [Question](https://codeforces.com/problemset/problem/1917/B) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1917%20B%20-%20Erase%20First%20or%20Second%20Letter)
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| 227 | 1919 A | Wallet Exchange | [Question](https://codeforces.com/problemset/problem/1919/A) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1919%20A%20-%20Wallet%20Exchange)
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| 228 | 1919 B | Plus-Minus Split | [Question](https://codeforces.com/problemset/problem/1919/B) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1919%20B%20-%20Plus-Minus%20Split)
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Reference in New Issue
Block a user