Submission

Score: 100

User: Dormon

Problemset: เพนกวิน

Language: cpp

Time: 0.002 second

Submitted On: 2025-05-31 14:18:22

#include <iostream>
#include <vector>

using namespace std;

int main()
{
    ios_base::sync_with_stdio(false);
    cin.tie(0);

    int n, ans = 0;
    cin >> n;
    vector<int> v(n);
    for (auto &e:v)
        cin >> e;
    for (int i = 0;i < n;i++)
        for (int j = 0;j < i;j++)
            ans += v[i] > v[j];
    cout << ans << '\n';
}