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  1. #include <bits/stdc++.h>
  2. using namespace std;
  3.  
  4. int main() {
  5.     ios_base::sync_with_stdio(0);
  6.     cin.tie(0);
  7.  
  8.     #ifndef ONLINE_JUDGE
  9.     freopen("input.txt", "r", stdin);
  10.     freopen("output.txt", "w", stdout);
  11.     #endif
  12.  
  13.     long long x;
  14.     cin >> x;
  15.     double logvalue = log2(x);
  16.  
  17.     if (logvalue == (long long)logvalue)
  18.     {
  19.         cout << "YES" << endl;
  20.     }
  21.     else
  22.     {
  23.         cout << "NO" << endl;
  24.     }
  25.     return 0;}
Success #stdin #stdout 0.01s 5280KB
comments (?)
stdin 
Standard input is empty
stdout 
NO
https://ideone.com/zwHsy9
language:
C++ (gcc 8.3)
created:
7 days ago
visibility:
public

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