#include <bits/stdc++.h>
using namespace std;
ifstream fcin("multiplu.in");
ofstream fcout("multiplu.out");

const int N = 2e6 + 5;
bool f[N];
int poz[N], r[N];
bool v[N];
int a, b, d, pr, ul;
/**
91

r = 1 10 11   9   19  20   90    0
    1 10 11 100  110 111 1000 1001
v = 1  0  1   0    0   1    0    1
poz 0  1  1   2    3   3    4    4
*/

int main()
{
    fcin >> a >> b;
    d = a / __gcd(a, b) * b;
    pr = ul = 1;
    r[ul] = v[ul] = 1;
    while (pr <= ul)
    {
        int x = r[pr];
        int y = x * 10 % d;
        if (f[y] == 0)
        {
            r[++ul] = y;
            v[ul] = 0;
            poz[ul] = pr;
            f[y] = 1;
            if (y == 0)
            {
                string s = "";
                for (int i = ul; i != 0; i = poz[i])
                    if (v[i] == 0)
                        s += '0';
                    else
                        s += '1';
                reverse(s.begin(), s.end());
                fcout << s;
                return 0;
            }
        }
        y = (y + 1) % d;
        if (f[y] == 0)
        {
            r[++ul] = y;
            v[ul] = 1;
            poz[ul] = pr;
            f[y] = 1;
            if (y == 0)
            {
                string s = "";
                for (int i = ul; i != 0; i = poz[i])
                {
//                    cout << i << ' ' << v[i] << endl;
                    if (v[i] == 0)
                        s += '0';
                    else
                        s += '1';
                }
                reverse(s.begin(), s.end());
                fcout << s;
                return 0;
            }
        }
        pr++;
    }
    return 0;
}