Submission

Status:

[PPPPPPPPPP]

Subtask/Task Score:

{100/100}

Score: 100

User: namo20952

Problemset: นักบินอวกาศ

Language: cpp

Time: 0.003 second

Submitted On: 2026-10-13 16:28:51

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

int main() {
    int ans=0,sum=4;
    int t;
    cin>>t;
    for(int i=1;i<=t;i++) {
        ans+=sum;
        sum+=6;
    }
    cout<<ans;
    return 0;
}