Submission

Score: 100

User: pitt

Problemset: นักบินอวกาศ

Language: cpp

Time: 0.004 second

Submitted On: 2026-10-01 12:50:10

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

int main()
{
    int t, h = 0;
    cin >> t;
    for (int i = 0; i <= t; i++)
    {
        if (i > 0)
        {
            if (i == 1)
            {
                h += 4;
            }
            else
            {
                h += 4 + (6 * (i - 1));
            }
            
        }
        //cout << h << endl;
    }
    cout << h;
}