#include <iostream>
#include <fstream>

using namespace std;

long long euclid(long long a, long long b)
{
    long long r;
    while(b > 0)
    {
        r = a % b;
        a = b;
        b = r;
    }
    return a;
}
int verify(long long multiplu)
{
    int ok = 1;
    while(multiplu > 0)
    {
        if(multiplu % 10 > 1)
        {
            ok = 0;
        }
        multiplu /= 10;
    }
    return ok;
}
int main()
{
    long long a, b, n, ok, multiplu;
    ifstream fin;
    fin.open("multiplu.in");
    fin >> a >> b;
    fin.close();

    n = a * b / euclid(a, b);

    ok = 1;
    multiplu = 0;
    while(ok == 1)
    {
        multiplu += n;
        if(verify(multiplu) == 1)
        {
            ok = 0;
        }
    }

    ofstream fout;
    fout.open("multiplu.out");
    fout << multiplu;
    fout.close();

    /// nu sunt sigur de complexitate :(

    return 0;
}