Submission

[PPPPPPPPPP]

Score: 100

User: Monasm

Problemset: นักบินอวกาศ

Language: cpp

Time: 0.002 second

Submitted On: 2024-11-15 17:22:06

#include <bits/stdc++.h>

using namespace std;

int main(){
    int t,ans=0,k=4;cin >> t;
    for(int i=0;i<t;i++){
        ans+=k;
        k+=6;
    }
    cout<<ans;
    return 0;
}