Submission

Score: 100

User: Kidmaiok

Problemset: นักบินอวกาศ

Language: cpp

Time: 0.002 second

Submitted On: 2026-10-11 14:03:34

#include <bits/stdc++.h>
using namespace std;
#define ll long long
#define ull unsigned long long
#define space << ' '
#define nl << endl

int main() {
    ios::sync_with_stdio(false);
    cin.tie(nullptr);
    int n;
    cin >> n;
    int arr[210] = {0};
    for(int i =1; i <= n;i++){
        arr[i] = arr[i-1] + 4 + (i-1)*6;
    }
    cout << arr[n];
    
}