added 1980 c &D
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Codes/1980 C - Sofia and the Lost Operations/1980C.cpp
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46
Codes/1980 C - Sofia and the Lost Operations/1980C.cpp
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#include <bits/stdc++.h>
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using namespace std;
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#define ll long long
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#define endl '\n'
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ll pow(ll x,ll y,ll m=1e9+7){ll ans=1;x%=m;while(y){if(y&1)ans=(ans*x)%m;x=(x*x)%m;y>>=1;}return ans;}
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void solve()
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{
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int n,m;
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cin>>n;
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vector<int>a(n),b(n);
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for(auto &i:a) cin>>i;
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for(auto &i:b) cin>>i;
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cin>>m;
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vector<int>d(m);
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map<int,int>mp;
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for(int i=0; i<m; ++i)
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{
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cin>>d[i];
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mp[d[i]]++;
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}
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bool f=1;
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for(int i=0; i<n; ++i)
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{
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if(a[i]==b[i]) continue;
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if(mp[b[i]])
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mp[b[i]]--;
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else
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f=0;
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}
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if(count(b.begin(),b.end(), d[m-1])==0) f=0;
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if(f) cout<<"YES\n";
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else cout<<"NO\n";
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}
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signed main()
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{
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ios_base::sync_with_stdio(false), cin.tie(nullptr);
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int TCS = 1;
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cin >> TCS;
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for (int TC = 1; TC <= TCS; ++TC)
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{
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// cout<<"Case "<<TC<<": ";
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solve();
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}
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}
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61
Codes/1980 D - GCD-sequence/1980D.cpp
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61
Codes/1980 D - GCD-sequence/1980D.cpp
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#include <bits/stdc++.h>
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using namespace std;
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#define ll long long
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#define endl '\n'
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ll pow(ll x,ll y,ll m=1e9+7){ll ans=1;x%=m;while(y){if(y&1)ans=(ans*x)%m;x=(x*x)%m;y>>=1;}return ans;}
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bool good(vector<int>v, int del)
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{
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v.erase(v.begin()+del);
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int last=gcd(v[0],v[1]);
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for(int i=1; i<v.size()-1; ++i)
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{
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int cur=gcd(v[i],v[i+1]);
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if(cur<last)
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{
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del=i;
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return false;
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}
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last=cur;
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}
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return true;
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}
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void solve()
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{
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int n;
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cin>>n;
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vector<int>v(n);
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for(auto &i:v) cin>>i;
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int del=-1;
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int last=gcd(v[0],v[1]);
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for(int i=1; i<n-1; ++i)
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{
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int cur=gcd(v[i],v[i+1]);
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if(cur<last)
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{
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del=i;
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break;
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}
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last=cur;
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}
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if(del==-1)
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{
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cout<<"YES\n";
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return;
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}
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if(good(v,del-1) || good(v,del) || good(v,del+1)) cout<<"YES\n";
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else cout<<"NO\n";
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}
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signed main()
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{
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ios_base::sync_with_stdio(false), cin.tie(nullptr);
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int TCS = 1;
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cin >> TCS;
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for (int TC = 1; TC <= TCS; ++TC)
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{
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// cout<<"Case "<<TC<<": ";
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solve();
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}
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}
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@ -331,9 +331,11 @@ This repository contains my solutions of Codeforces problems. They are in C++ la
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| 319 | 1977 A | Little Nikita | [Question](https://codeforces.com/problemset/problem/1977/A) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1977%20A%20-%20Little%20Nikita)
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| 319 | 1977 A | Little Nikita | [Question](https://codeforces.com/problemset/problem/1977/A) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1977%20A%20-%20Little%20Nikita)
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| 320 | 1980 A | Problem Generator | [Question](https://codeforces.com/problemset/problem/1980/A) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1980%20A%20-%20Problem%20Generator)
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| 320 | 1980 A | Problem Generator | [Question](https://codeforces.com/problemset/problem/1980/A) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1980%20A%20-%20Problem%20Generator)
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| 321 | 1980 B | Choosing Cubes | [Question](https://codeforces.com/problemset/problem/1980/B) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1980%20B%20-%20Choosing%20Cubes)
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| 321 | 1980 B | Choosing Cubes | [Question](https://codeforces.com/problemset/problem/1980/B) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1980%20B%20-%20Choosing%20Cubes)
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| 322 | 1981 A | Turtle and Piggy Are Playing a Game | [Question](https://codeforces.com/problemset/problem/1981/A) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1981%20A%20-%20Turtle%20and%20Piggy%20Are%20Playing%20a%20Game)
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| 322 | 1980 C | Sofia and the Lost Operations | [Question](https://codeforces.com/problemset/problem/1980/C) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1980%20C%20-%20Sofia%20and%20the%20Lost%20Operations)
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| 323 | 1981 B | Turtle and an Infinite Sequence | [Question](https://codeforces.com/problemset/problem/1981/B) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1981%20B%20-%20Turtle%20and%20an%20Infinite%20Sequence)
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| 323 | 1980 D | GCD-sequence | [Question](https://codeforces.com/problemset/problem/1980/D) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1980%20D%20-%20GCD-sequence)
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| 324 | 1981 C | Turtle and an Incomplete Sequence | [Question](https://codeforces.com/problemset/problem/1981/C) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1981%20C%20-%20Turtle%20and%20an%20Incomplete%20Sequence)
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| 324 | 1981 A | Turtle and Piggy Are Playing a Game | [Question](https://codeforces.com/problemset/problem/1981/A) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1981%20A%20-%20Turtle%20and%20Piggy%20Are%20Playing%20a%20Game)
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| 325 | 1981 B | Turtle and an Infinite Sequence | [Question](https://codeforces.com/problemset/problem/1981/B) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1981%20B%20-%20Turtle%20and%20an%20Infinite%20Sequence)
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| 326 | 1981 C | Turtle and an Incomplete Sequence | [Question](https://codeforces.com/problemset/problem/1981/C) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1981%20C%20-%20Turtle%20and%20an%20Incomplete%20Sequence)
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