Submission

Status:

[PPPPPPPPPP]

Subtask/Task Score:

{100/100}

Score: 100

User: nunos

Problemset: นักบินอวกาศ

Language: cpp

Time: 0.003 second

Submitted On: 2025-09-29 16:50:01

#include <iostream>
using namespace std;

int main() {
    int sum=4;
    int add=4;
    int x=0;cin>>x;
    if(x==0) cout << "0";
    else{
        for(int i=1;i<x;i++){
            add+=6;
            sum+=add;
        }
        cout << sum;
    }
    return 0;
}