#include <bits/stdc++.h>

using namespace std;

ifstream f("multiplu.in");
ofstream g("multiplu.out");

int a, b;
long long m;

bool good(long long num){
    while(num){
        if(num % 10 > 1)
            return 0;

        num /= 10;
    }

    return 1;
}

int main(){
    f >> a >> b;
    f.close();
    m = (a * b) / __gcd(a, b);
    for(long long i = 1;; i++){
        if(good(m * i)){
            g << m * i;
            break;
        }
    }

    g.close();
}