Codeforces Round 867 (Div. 3) 1822C. Bun Lover Solution

 Problem Link : https://codeforces.com/contest/1822/problem/C

Solution in C++:

1. /// Author : AH_Tonmoy
2. #include <bits/stdc++.h>
3. using namespace std;
4. int32_t main() {
5. ios_base::sync_with_stdio(0);
6. cin.tie(0);
7. int t;
8. cin >> t;
9. while (t--) {
10. long long n ;
11. cin >> n ;
12. cout << ( n + 1 ) * ( n + 1) + 1 << endl;
13. }
14. }