Submission

Score: 0

User: FakeAnutin

Problemset: นักบินอวกาศ

Language: cpp

Time: 0.002 second

Submitted On: 2026-09-20 19:47:56

#include <bits/stdc++.h>
using namespace std;
int main(){
	int n; cin>>n;
	int cc=4;
	int x=10;
	if(n==0){
		cout<<4;
		return 0;
	}
	for(int i=1;i<n;i++){
		cc = cc+x;
		x+=6;
	}
	cout<<cc;
}