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답안 #816012

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
816012 2023-08-09T03:46:44 Z kebine Ekoeko (COCI21_ekoeko) C++17
0 / 110
 1 ms 468 KB 
#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 - 1) / 2 << "\n";
}

Subtask #1
0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 212 KB Output is correct
2 Incorrect 1 ms 468 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #2
0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 212 KB Output is correct
2 Incorrect 1 ms 468 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #3
0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 212 KB Output is correct
2 Incorrect 1 ms 468 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #4
0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 0 ms 212 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #5
0 / 40.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 212 KB Output is correct
2 Incorrect 1 ms 468 KB Output isn't correct
3 Halted 0 ms 0 KB -