Submission

Status:

[PPPPPPPPPP]

Subtask/Task Score:

{100/100}

Score: 100

User: Songkran

Problemset: นักบินอวกาศ

Language: cpp

Time: 0.002 second

Submitted On: 2025-09-26 21:08:21

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

int main(){
    
    int n;
    cin >> n;
    if (n == 0) {cout << "0"; return 0;}
    if (n == 1) {cout << "4"; return 0;}
    cout << n * ((3*n)+1);
    return 0;
}