This submission is migrated from previous version of oj.uz, which used different machine for grading. This submission may have different result if resubmitted.
#include <bits/stdc++.h>
using namespace std;
int main()
{
ios_base::sync_with_stdio(false);
cin.tie(0);
cout.tie(0);
long long n,k;
cin>>n>>k;
k--;
long long num=0;
for(int i=0;i<n;i++)
{
num=2*num+(k%2);
k/=2;
}
num++;
cout<<num<<endl;
return 0;
}
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