Submission

Score: 100

User: nattawin

Problemset: นักบินอวกาศ

Language: cpp

Time: 0.004 second

Submitted On: 2026-10-05 15:52:09

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

int main() 
{
	int time,num=4,go=4;
	cin>>time;
	if(time==0)
	{
		num=0;
	}
	for(int i = 1 ; i < time ; i++)
	{
		go=go+6;
		num+=go;
	}
cout<<num;
		
}