# include <stdio.h>
long i,a,b,x,l;
int main ()
{
freopen ("multiplu.in","r",stdin);
freopen ("multiplu.out","w",stdout);
scanf ("%ld",&a);
scanf ("%ld",&b);
for (i=1;i<2000000000;i++)
{
x=i;
l=0;
while (x)
{
if (x%10!=0 && x%10!=1)
l=1;
x=x/10;
}

if (l==0)
{

if (i%a==0 && i%b==0)
{
printf ("%ld",i);
break;
}

}



}
return 0;
}