Submission

Score: 100

User: JRomsponCH

Problemset: Sigma Croissant

Language: cpp

Time: 0.003 second

Submitted On: 2025-09-29 17:39:17

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

int main() {
    int n;
    long long total = 0;
    cin>>n;
    for (int i = 1; i <= n; i++) {
        long long fac = 1;
        for (int j = i;j >= 1; j--) {
            fac *= j;
        }
        total += fac;
    }
    cout<<total;
}