#include<bits/stdc++.h>
using namespace std;
int main ()
{
    ios::sync_with_stdio(0),cin.tie(0),cout.tie(0);
    long long n, p;cin >> n >> p;
    if(n * 9 < p)
    {
        cout << 1;
        for(int i = 1;i <= n - 1; ++ i)
        {
            cout << 0;
        }
    }
    else
    {
        long long diff = n * 9 - p;
        if(diff <= 8)
        {
            cout << 9 - diff;
            for(int i = 1;i < n; ++ i)cout << 9;
        }
        else
        {
            long long num1 = (diff - 8) / 9;
            int num2 = (diff - 8) % 9;
            cout << 1;
            for(int i = 1;i <= num1; ++ i)cout << 0;
            cout << 9 - num2;
            for(int i = 1;i <= n - num1 - 2; ++ i)cout << 9;
        }
    }
    return 0;
}