Submission

Status:

[PPPPPPPPPP]

Subtask/Task Score:

{100/100}

Score: 100

User: kenmuay

Problemset: นักบินอวกาศ

Language: cpp

Time: 0.002 second

Submitted On: 2025-10-13 18:48:01

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

int main(){
    int n;
    cin >> n;
    if(n==0){
        cout << 0;
        return 0;
    }
    int v=4,a=6;
    int sum=0;
    for(int i=1; i<=n; i++){
        sum+=v;
        v+=a;
    }
    cout << sum;

    return 0;
}