oj.uz

답안 #857479

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
857479 2023-10-06T09:10:09 Z lbadea1000 W (RMI18_w) C++17
20 / 100
 86 ms 3548 KB 
#include <bits/stdc++.h>

using namespace std;

const int NMAX = 3e5 + 5;
const int MOD = 1e9 + 7;
int v[NMAX];

int main() {
    int n;
    cin >> n;
    for(int i = 0; i < n; i++)
        cin >> v[i];
    sort(v, v + n);
    int cnt1 = 0;
    int i = 0;
    while(i < n && v[i] == v[0]) {
        i++;
        cnt1++;
    }
    int cnt2 = 0;
    while(i < n && v[i] == v[n - 1]) {
        i++;
        cnt2++;
    }
    if(cnt1 + cnt2 == n)
        cout << 1LL * (cnt2 - 2) * (cnt2 - 1) / 2 % MOD * (cnt1 - 1) % MOD;
    else {
        int ans = 0;
        for(int a = 2; a <= n - 3; a++) {
            ans = (ans + (1LL * (n - a - 2) * (n - a - 1) / 2 % MOD)) % MOD;
        }
        cout << ans;
    }
    return 0;
}

Subtask #1
20.0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 11 ms 820 KB Output is correct
4 Correct 46 ms 2472 KB Output is correct

Subtask #2
0 / 30.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 0 ms 360 KB Output isn't correct
2 Incorrect 1 ms 348 KB Output isn't correct
3 Incorrect 8 ms 688 KB Output isn't correct
4 Incorrect 29 ms 1488 KB Output isn't correct
5 Incorrect 62 ms 2560 KB Output isn't correct
6 Incorrect 86 ms 3492 KB Output isn't correct

Subtask #3
0 / 50.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 0 ms 456 KB Output isn't correct
2 Incorrect 0 ms 360 KB Output isn't correct
3 Incorrect 0 ms 360 KB Output isn't correct
4 Incorrect 1 ms 360 KB Output isn't correct
5 Incorrect 1 ms 360 KB Output isn't correct
6 Incorrect 2 ms 360 KB Output isn't correct
7 Incorrect 3 ms 360 KB Output isn't correct
8 Incorrect 28 ms 1384 KB Output isn't correct
9 Incorrect 43 ms 2132 KB Output isn't correct
10 Incorrect 84 ms 3548 KB Output isn't correct