Submission

Score: 100

User: pottersk146

Problemset: นักบินอวกาศ

Language: cpp

Time: 0.003 second

Submitted On: 2026-10-12 19:20:21

#include <bits/stdc++.h>
using namespace std;
using ll = long long;
int main(){
    ios::sync_with_stdio(false);
    cin.tie(nullptr);
    ll t, time=0;
    cin>>t;
    for (int i=1; i<=t; i++){
        time+=6*i-2;
    }
    cout<<time;
}