Submission

Status:

[PPPPPPPPPP]

Subtask/Task Score:

{100/100}

Score: 100

User: navysrimuang

Problemset: นักบินอวกาศ

Language: cpp

Time: 0.003 second

Submitted On: 2025-09-26 22:24:20

#include<bits/stdc++.h>
#define endl '\n'
using namespace std;

int main(){

  int t;cin >> t;
  int sum = 0;
  for(int i = 1;i<=t;i++){
    sum += 4*i + 2*(i-1);
  }
  cout << sum << endl;
  return 0;
}