Add solution for problem 1917B

This commit is contained in:
ShazidMahsrafi 2023-12-25 14:11:28 +06:00
parent 41302b3ab3
commit 255ab9861f
2 changed files with 89 additions and 0 deletions

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#include<bits/stdc++.h>
using namespace std;
// Short forms
#define int long long
#define ll long long
#define ull unsigned long long
#define endl '\n'
#define ff first
#define ss second
#define pb push_back
#define all(x) x.begin(), x.end()
#define sz(x) (int)(x).size()
// Outputs
#define yes cout<<"YES"<<endl
#define no cout<<"NO"<<endl
// Constants
#define PI 3.141592653589793238
#define MIN INT_MIN
#define MAX INT_MAX
#define INF LONG_LONG_MAX
#define M 1000000007
#define LLM 1000000000000000007
// Faster Input Output
#define FAST_IO (ios_base:: sync_with_stdio(false),cin.tie(NULL));
// Maths
ll fact(ll n) { if(n==0) return 1; ll res = 1; for (ll i = 2; i <= n; i++) res = res * i; return res; }
ll nPr(ll n, ll r) { return fact(n) / fact(n - r); }
ll nCr(ll n, ll r) { return fact(n) / (fact(r) * fact(n - r)); }
ll gcd(ll a, ll b) { if (b == 0) return a; return gcd(b, a % b); }
ll lcm(ll a, ll b) { return (a * b) / gcd(a, b);}
ull mypow(ull a, ull b) { ull ans = 1; a%=M; while(b){ if (b&1) ans = (ans*a) % M; a = (a*a) % M; b >>= 1; } return ans; }
bool isPrime(ll n) { if(n <= 1) return false; for(ll i = 2; i <= sqrt(n); i++) if(n % i == 0) return false; return true; }
//Debugging
#ifndef ONLINE_JUDGE
#define dbg(x) cerr << #x <<" "; _print(x); cerr << endl;
#define dbgin(x) cerr << #x <<" "; _print(x); cerr << ";"<<endl;
#else
#define dbg(x)
#define dbgin(x)
#endif
void _print(int t) {cerr << t;}void _print(string t) {cerr << t;}void _print(char t) {cerr << t;}
void _print(long double t) {cerr << t;}void _print(double t) {cerr << t;}void _print(unsigned ll t) {cerr << t;}
template <class T, class V> void _print(pair <T, V> p);
template <class T> void _print(vector <T> v);template <class T> void _print(set <T> v);
template <class T, class V> void _print(map <T, V> v);template <class T> void _print(multiset <T> v);
template <class T, class V> void _print(pair <T, V> p) {cerr << "{"; _print(p.first); cerr << ","; _print(p.second); cerr << "}";}
template <class T> void _print(vector <T> v) {cerr << "[ "; for (T i : v) {_print(i); cerr << " ";} cerr << "]";}
template <class T> void _print(set <T> v) {cerr << "[ "; for (T i : v) {_print(i); cerr << " ";} cerr << "]";}
template <class T> void _print(multiset <T> v) {cerr << "[ "; for (T i : v) {_print(i); cerr << " ";} cerr << "]";}
template <class T> void _print(unordered_set <T> v) {cerr<<"[ "; for(T i : v) {_print(i); cerr<<" ";} cerr<<"]";}
template <class T, class V> void _print(map <T, V> v) {cerr << "[ "; for (auto i : v) {_print(i); cerr << " ";} cerr << "]";}
template <class T, class V> void _print(multimap <T, V> v) {cerr << "[ "; for (auto i : v) {_print(i); cerr << " ";} cerr << "]";}
template <class T, class V> void _print(unordered_map <T, V> v) {cerr << "[ "; for (auto i : v) {_print(i); cerr << " ";} cerr << "]";}
/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
void solve()
{
int n;
string s;
cin>>n>>s;
vector<bool>found(26,0);
int ans = 0;
for(int i=0; i<n; ++i)
{
if(!found[s[i]-'a'])
{
found[s[i]-'a']=1;
ans += n-i;
}
}
cout<<ans<<endl;
}
int32_t main()
{
FAST_IO;
int TC = 1;
cin >> TC;
while (TC--) solve();
}

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@ -222,6 +222,7 @@ This repository contains my solutions of Codeforces problems. They are in C++ la
| 1914E1 | Game with Marbles (Easy Version) | [Question](https://codeforces.com/problemset/problem/1914/E1) | [Solution]
| 1914E2 | Game with Marbles (Hard Version) | [Question](https://codeforces.com/problemset/problem/1914/E2) | [Solution]
| 1917A | Least Product | [Question](https://codeforces.com/problemset/problem/1917/A) | [Solution]
| 1917B | Erase First or Second Letter | [Question](https://codeforces.com/problemset/problem/1917/B) | [Solution]
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