Submission

Status:

[PPPPPPPPPP]

Subtask/Task Score:

{100/100}

Score: 100

User: opjns

Problemset: นักบินอวกาศ

Language: cpp

Time: 0.002 second

Submitted On: 2025-10-11 10:02:06

#include <iostream>
using namespace std;

int main () {
    int t, h = 0;
    cin >> t;
    if(t<0) {
        return 0;
    }
    int x =4;
    for (int i = 0; i < t; i++) {
        h += x;
        x += 6;
    }
    cout << h;
}