Submission

Status:

[PPPPPPPPPP]

Subtask/Task Score:

{100/100}

Score: 100

User: bananakung

Problemset: นักบินอวกาศ

Language: cpp

Time: 0.002 second

Submitted On: 2025-09-04 21:12:43

#include<bits/stdc++.h>
using namespace std;
int main()
{
	int t;
	cin>>t;
	int add=4,sum=0;
	for(int i=1;i<=t;i++)
	{
		sum+=add;
		add+=6;
	}
	cout<<sum;
	
	
}