#include <iostream>

using namespace std;

bool verif(long long int x)
{
    if(x==1 || x==0) return 1;
    if(x%10!=0 && x%10!=1) return 0;
    x/=10;
    return verif(x);
}

int gcd(int a, int b)
{
    if(a%b==0) return b;
    return gcd(b,a%b);
}

int main()
{
    int a,b,scm,i;
    cin >> a >> b;
    if(a<b) swap(a,b);
    scm=(a*b)/gcd(a,b);
    i=scm;
    while(true)
    {
        //cout << i << "\n";
        if(verif(i))
        {
            cout << i;
            return 0;
        }
        i+=scm;
    }
    return 0;
}