#include <stdio.h>
long a,b,r,m,i,j,ok,cop;

int main()
{
    FILE*f1,*f2;
    f1=fopen("multiplu.in","r");
    f2=fopen("multiplu.out","w");
    fscanf(f1,"%ld%ld",&a,&b);
    m=r=a*b;
    while(!ok)
    {
        ok=1;
        cop=m;
        while(ok && cop)
        {
            if(cop%10>1)
                ok=0;
            cop/=10;
        }
        if(ok)
            fprintf(f2,"%ld",m);
        m+=r;
    }
    return 0;
}