Submission

Status:

[PPPPPPPPPP]

Subtask/Task Score:

{100/100}

Score: 100

User: cheraim

Problemset: นักบินอวกาศ

Language: cpp

Time: 0.004 second

Submitted On: 2026-10-09 10:04:50

#include <iostream>
using namespace std;

int main() 
{
    int n;
    cin>>n;
    // int ans=0;
    // for(int i=1;i<=n;i++){
    //     ans+=(i*6)-2;
    //     //cout<<ans<<' ';
    // }
    // cout<<ans<<"\n";
    cout<<((n+1)*n/2)*6-(2*n);
}