#include <bits/stdc++.h>

using namespace std;

ifstream fin("multiplu.in");
ofstream fout("multiplu.out");
int a, b, m, x;
queue<int> q;
bitset<100002> fr;

static inline long long cmmdc(long long a, long long b) {
    long long rest = a % b;
    while(rest) {
        a = b;
        b = rest;
        rest = a % b;
    }
    return b;
}

int main() {
    fin >> a >> b;
    m = a * b / cmmdc(a, b);
    q.push(1);
    fr[1] = 1;
    while(q.front() % m != 0) {
        x = q.front();
        if(x % m == 0) break;
        if(!fr[x * 10]) q.push(x * 10);
        if(!fr[x * 10 + 1]) q.push(x * 10 + 1);
        q.pop();
    }
    fout << q.front();

    return 0;
}