Submission

Status:

[PPPPPPPPPP]

Subtask/Task Score:

{100/100}

Score: 100

User: cheetah

Problemset: นักบินอวกาศ

Language: cpp

Time: 0.003 second

Submitted On: 2026-10-06 19:20:28

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

int main () {
    ios_base::sync_with_stdio(0);
    cin.tie(0);

    int t, h = 4;
    cin >> t;

    if (t == 0) {
        cout << 0;
    }
    else {
        cout << t * ((t - 1) * 3 + 4);
    }

    return 0;
}