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  1. #include <iostream>
  2. #include <cmath>
  3.  
  4. using namespace std;
  5.  
  6. int main()
  7. {
  8.     int n, m;
  9.     double k;
  10.     cin >> n;
  11.     m=log2(n);
  12.     k=log2(n);
  13.     while(m!=k){
  14.         n=n-(pow(2,m));
  15.         m=log2(n);
  16.         k=log2(n);
  17.     }
  18.     cout << m+1;
  19.     return 0;
  20. }
Success #stdin #stdout 0s 4532KB
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https://ideone.com/QNfkxf
language:
C++14 (clang 8.0)
created:
6 years ago
visibility:
public

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