#include"bits/stdc++.h" using namespace std; int s[105]; int main(){ int n,a,t; cin>>n>>a; t=a; if(n*9<a||((a==0)&&(n>=2)))cout<<"-1 -1"; else{ for(int i=n-1;i>0;i--){ s[i]=min(9,a-1); a=a-min(9,a-1);} s[0]=a; for(int i=0;i<n;i++)cout<<s[i]; cout<<" "; for(int i=0;i<n;i++){ cout<<min(9,t-1); t=t-min(9,t);}} }