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  1. #include <iostream>
  2. using namespace std;
  3.  
  4. int main() {
  5. 	long long k;
  6. 	cin>>k;
  7.     while (k > 1) {
  8.     if(k%2!=0){
  9.     	cout<<"NO";
  10.     	return 0;}
  11.     	k/=2;}
  12.  
  13.    cout<<"YES";
  14.  
  15. }
Success #stdin #stdout 0s 5320KB
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stdin
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10
stdout
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NO
https://ideone.com/80nHwJ
language:
C++ (gcc 8.3)
created:
13 hours ago
visibility:
public

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