Submission

Score: 0

User: korn234

Problemset: นักบินอวกาศ

Language: cpp

Time: 0.002 second

Submitted On: 2026-09-20 10:06:09

#include <iostream>
using namespace std;
int main(){
	int t, h;
	cin>>t;
	if (t==0){
		cout<<"0";
		return 0;
	}
	for (int i=1; i<=t; i++){
		h+=6*i-2;
	}
	cout<<h;
}