#include <iostream>
#include <fstream>
using namespace std;

unsigned long long nrm=4294967295;

int cmmdc(int a,int b)
{
    int r;
    r=a%b;
    if(r==0)
     return b;
    else
    {
        a=b;
        b=r;
        cmmdc(a,b);
    }
}


void back(unsigned long long nr,int m)
{
    if(nr%m==0 && nr<nrm && nr>=m)
    {
        nrm=nr;
    }
    if(nr<=111111111)
       {
        back(nr*10,m);
        back(nr*10+1,m);
       }
}

int main()
{

   int a,b,m;
    ifstream f("multiplu.in");
    ofstream g("multiplu.out");
    f>>a>>b;
    m=((a*b)/cmmdc(a,b));
    back(1,m);
    g<<nrm;
    return 0;
}