#include<bits/stdc++.h>
using namespace std;
int main()
{
	unsigned long long n,k=0;
	cin>>n>>k;
	for(long long i=n;i>=1;i--)
	{
		unsigned long long a=(pow(2,i)-1)/2;
		if(k>a)
		{
			cout<<1;
			k=pow(2,i)-1-k;
		}
		else
			cout<<0;
	}
	return 0;
}