oj.uz

Submission #698787

# Submission time Handle Problem Language Result Execution time Memory
698787 2023-02-14T09:58:31 Z vjudge1 Duathlon (APIO18_duathlon) C++17
0 / 100
 20 ms 320 KB 
#include <bits/stdc++.h>
#define endl '\n'
#define FAST ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0)
#define int ll
#define all(vec) vec.begin(), vec.end()
typedef long long ll;
using namespace std;
const int N = 1e3 + 10, mod = 1e9 + 7;

signed main()
{
    FAST;
    int n, m;
    cin >> n >> m;
    for(int i = 0; i < m; i++) {
        int a, b;
        cin >> a >> b;
    }
    if(n == 1) {
        cout << 0 << endl;
        return 0;
    }
    if(n == 2) {
        cout << 0 << endl;
        return 0;
    }
    int ans = 0;
    for(int i = 1; i <= n - 2; i++) {
        int a = n - i - 1;
        ans += a * (a + 1) / 2;
    }
    cout << ans * 2 << endl;
}

Subtask #1
0 / 5.0

# Verdict Execution time Memory Grader output
1 Incorrect 0 ms 212 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #2
0 / 11.0

# Verdict Execution time Memory Grader output
1 Incorrect 0 ms 212 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #3
0 / 8.0

# Verdict Execution time Memory Grader output
1 Incorrect 20 ms 316 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #4
0 / 10.0

# Verdict Execution time Memory Grader output
1 Incorrect 1 ms 212 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #5
0 / 13.0

# Verdict Execution time Memory Grader output
1 Incorrect 14 ms 212 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #6
0 / 15.0

# Verdict Execution time Memory Grader output
1 Incorrect 1 ms 212 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #7
0 / 20.0

# Verdict Execution time Memory Grader output
1 Incorrect 16 ms 320 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #8
0 / 8.0

# Verdict Execution time Memory Grader output
1 Incorrect 0 ms 212 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #9
0 / 10.0

# Verdict Execution time Memory Grader output
1 Incorrect 0 ms 212 KB Output isn't correct
2 Halted 0 ms 0 KB -