#include <bits/stdc++.h>

using namespace std;
ifstream fin  ("multiplu.in");
ofstream fout ("multiplu.out");
int a,b;
long long divv,m;

int cmmdc (int a,int b)
{
    int r;
    while(b)
    {
        r=a%b;
        a=b;
        b=r;
    }
    return a;
}
bool valid(int x)
{   int ok=1;
//cout<<"x="<<x<<endl;
    while(x)
    {
        if(x%10!=0 && x%10!=1)
            ok=0;
        x/=10;
    }
    //cout<<"ok="<<ok<<endl;
    return ok;
}
long long verif()
{
    int ok=0,i=1;
    while(!ok)
    {
        if(valid(m*i)) ok=true;
        i++;
    }
    return m*(i-1);
}
int main()
{
    fin>>a>>b;
    m=(a*b)/cmmdc(a,b);
    fout<<verif();


    return 0;
}