131622025-01-06 19:35:13bzyÚthasználati díj (75 pont)cpp17Wrong answer 5/7518ms808 KiB
#include <bits/stdc++.h>
using namespace std;
#define ll  long long

int main()
{
    int n, k; cin >> n >> k;
    vector <int> A(n);
    int utidijas = 0;
    for(int i = 0; i < n; i++)
    {
        cin >> A[i];
        if(A[i] == 1) utidijas++;
    }
    int ans = 0;
    ans += (utidijas - k + 1) * (k-1);
    ans += (utidijas - k) * (utidijas - k - 1) / 2;
    if(ans < 0) cout << 0;
    else cout << ans;
    return 0;
}
SubtaskSumTestVerdictTimeMemory
base5/75
1Accepted0/01ms316 KiB
2Accepted0/01ms316 KiB
3Wrong answer0/018ms564 KiB
4Wrong answer0/51ms316 KiB
5Wrong answer0/51ms316 KiB
6Wrong answer0/51ms316 KiB
7Wrong answer0/51ms316 KiB
8Accepted5/51ms316 KiB
9Wrong answer0/51ms316 KiB
10Wrong answer0/51ms500 KiB
11Wrong answer0/51ms316 KiB
12Wrong answer0/51ms316 KiB
13Wrong answer0/51ms316 KiB
14Wrong answer0/518ms564 KiB
15Wrong answer0/518ms564 KiB
16Wrong answer0/518ms808 KiB
17Wrong answer0/518ms564 KiB
18Wrong answer0/518ms564 KiB