Submission

Score: 100

User: cyblox_boi

Problemset: Sigma Croissant

Language: cpp

Time: 0.003 second

Submitted On: 2025-12-29 22:28:20

#include <bits/stdc++.h>
using namespace std;

int main()
{
    ios::sync_with_stdio(false);
    cin.tie(nullptr);

    int n;
    cin >> n;

    long long result = 1;
    long long total = 0;

    for (int i = 1; i <= n; i++)
    {
        result *= i;
        total += result;
    }

    cout << total << '\n';

    return 0;
}