Submission

Status:

[PPPPPPPPPP]

Subtask/Task Score:

{100/100}

Score: 100

User: cj

Problemset: นักบินอวกาศ

Language: cpp

Time: 0.003 second

Submitted On: 2026-10-04 13:57:02

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

int main(){
	int s;
	cin>>s;
	int ans = 0;
	int n = 4;
	for(int i=0;i<s;i++){
		ans += n;
		n = n+6;
	}
	cout<<ans;
	return 0;
}