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  1. #include<iostream>
  2. using namespace std;
  3. int main(){
  4.     int a,b;
  5.     cin>>a>>b;
  6.     int xr = a^b;
  7.     int msbpos=0;
  8.     while(xr){
  9.          msbpos++;
  10.          xr = xr>>1;
  11.     }
  12.     int maxxr=0;
  13.     int x=1;
  14.     while(msbpos--){
  15.          maxxr+=x;
  16.          x = x<<1;
  17.     }
  18.  
  19.     cout<<maxxr;
  20.     return 0;
  21.  
  22. }
Success #stdin #stdout 0s 4512KB
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stdin
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89 108
stdout
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63
https://ideone.com/LZA8xq
language:
C++ (gcc 8.3)
created:
5 years ago
visibility:
secret

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