913A - Modular Exponentiation

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  1. #include<iostream>
  2. #include<math.h>
  3. using namespace std;
  4. int main(){
  5. long n,m;
  6. cin>>n>>m;
  7. long p= pow(2,n);
  8. long ans = m%p;
  9. cout<<ans;
  10.  
  11.  

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