Submission #816015

#	Time	Username	Problem	Language	Result	Execution time	Memory
816015		devariaota	Ekoeko (COCI21_ekoeko)	C++17	10 / 110	1 ms	852 KiB

Main

#include <bits/stdc++.h>
using namespace std;
#define ll long long
#define ld long double
#define ull unsigned long long
#define pii pair<int, int>
#define pll pair<ll, ll>
#define fi first
#define se second

const int N = 2e5 + 5;

int cnt[50];

int main() { 
    ios_base::sync_with_stdio(false); cin.tie(NULL);
    int n;
    string s;
    cin >> n >> s;
    for (int i = 0; i < 2 * n; i++) cnt[s[i] - 'a']++;
    if (cnt[0] == n and cnt[1] == n) cout << 1ll * n * n / 4 << "\n";
}  

• Subtask 1: 10 / 10
• Subtask 2: 0 / 20
• Subtask 3: 0 / 20
• Subtask 4: 0 / 20
• Subtask 5: 0 / 40