fork(1) download
copy 
  1. #include <bits/stdc++.h>
  2. using namespace std;
  3.  
  4. #define int long long
  5.  
  6. int t, n, k;
  7.  
  8. void solve() {
  9.     cin >> n >> k;
  10.     int initial = (1 << n);
  11.     k--;
  12.  
  13.     int res = 0;
  14.     while (k--) {
  15.         initial /= 2;
  16.         res += 2;
  17.     }
  18.  
  19.     cout << initial + res << '\n';
  20. }
  21.  
  22. int32_t main() {
  23.  
  24.     cin >> t;
  25.     while(t--) {
  26.         solve();
  27.     }
  28.  
  29.     return 0;
  30. }
Success #stdin #stdout 0.01s 5320KB
comments (?)
stdin
copy 
5
1 1
2 1
4 3
5 5
10 2
stdout
copy 
2
4
8
10
514
https://ideone.com/XL7IQh
language:
C++ (gcc 8.3)
created:
2 days ago
visibility:
public

Share or Embed source code

Discover > Sphere Engine API

The brand new service which powers Ideone!

Discover > IDE Widget

Widget for compiling and running the source code in a web browser!