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  1. #include <iostream>
  2. using namespace std;
  3.  
  4. int main() {
  5.     int n;
  6.     int k;
  7.     cin >> n;
  8.     while (n-- > 0) {
  9.     	cin >> k;
  10.     	cout << (1 << k) - 1 << endl;
  11.     }
  12. 	return 0;
  13. }
Success #stdin #stdout 0s 15232KB
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https://ideone.com/2aj1bo
language:
C++ (gcc 8.3)
created:
5 years ago
visibility:
public

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