Submission

Score: 100

User: pottersk146

Problemset: นักบินอวกาศ

Language: cpp

Time: 0.004 second

Submitted On: 2026-10-06 16:19:37

#include <iostream>
using namespace std;
int main()
{
    ios::sync_with_stdio(false);
    cin.tie(nullptr);
    int t;
    cin >> t;
    int plus = 0;
    for (int i = 1; i <= t; i++)
    {
        plus += 6 * i - 2;
    }
    cout << plus;
}