Submission

Score: 100

User: colo39

Problemset: นักบินอวกาศ

Language: cpp

Time: 0.004 second

Submitted On: 2026-09-30 15:58:16

#include <bits/stdc++.h>
using namespace std;
int arr[500];
int main () {
    ios_base::sync_with_stdio(false);
    cin.tie(0);
    arr[0] = 0;
    arr[1] = 4;

    int inc = 4;
    int i = 2;
    while (1) {
        inc += 6;
        arr[i] = arr[i-1] + inc;
        i++;
        if (i == 201) break;
    }

    int n;
    cin >> n;
    cout  << arr[n];
    

}