#include<bits/stdc++.h>
 using namespace std; 
 int main()
 {
    unsigned long long  a,b;int m;
    cin>>a>>b;long long c=0;m=b;
    unsigned long long ans;
    while(b>0)
    {c++;b/=10;}
    if(a<=c)
    {
    	cout<<pow(10,a)+m;
    	return 0;
	}
    cout<<1;
    for(int i=1;i<a-c;i++)
    cout<<0;
    cout<<m;
    
    return 0;
 }