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  1. #include <bits/stdc++.h>
  2. using namespace std;
  3. #define int long long
  4.  
  5. int32_t main() {
  6.     ios::sync_with_stdio(false);
  7.     cin.tie(NULL);
  8.  
  9.     int m,n;
  10.     cin>>n>>m;
  11.     int ans=0;
  12.     while(m>n){
  13.     	if(m%2!=0) m--;
  14.     	else m/=2;
  15.     	ans++;
  16.     }
  17.     cout<<ans+n-m<<endl;
  18.     return 0;
  19. }
  20.  
Success #stdin #stdout 0.01s 5288KB
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https://ideone.com/66XuqV
language:
C++ (gcc 8.3)
created:
2 days ago
visibility:
public

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