Submission

Status:

[PPPPPPPPPP]

Subtask/Task Score:

{100/100}

Score: 100

User: mik

Problemset: นักบินอวกาศ

Language: cpp

Time: 0.003 second

Submitted On: 2026-10-11 08:57:04

#include <bits/stdc++.h>

using namespace std;

int main(){
    ios_base::sync_with_stdio(false),cin.tie(NULL);
    int s,sum=4;
    cin >> s;
    if (s==0) cout << 0;
    else {
        int  e = 6;
        for (int i=0;i<s-1;i++){
            sum += 4;
            sum += e;
            e += 6;
        }
        cout << sum;
    }
    return 0;
}