#include <fstream>
#include <algorithm>
using namespace std;
ifstream fin("multiplu.in");
ofstream fout("multiplu.out");
int a,b,a2,b2,r,cmmmc,v,av,u,m,k,i,sol,ave;
int main()
{
    fin>>a>>b;
    a2=a;
    b2=b;
    while(b2!=0){
        r=a2%b2;
        a2=b2;
        b2=r;


    }
    cmmmc=a*b/a2;
    v=cmmmc;
    for(i=1;i<=100000000;i++)
    {

        av=cmmmc;
        ave=cmmmc;
        m=0;
        k=0;
        while(av!=0){
            m++;
            u=av%10;
            if(u==1||u==0){
                k++;
            }
            else
            {
                break;
            }

            av=av/10;
        }
        if(k==m){
            fout<<ave;
            break;
        }
        cmmmc=cmmmc+v;
    }
    return 0;
}