#include<stdio.h>
FILE *f=fopen("multiplu.in","r"),*g=fopen("multiplu.out","w");
long i,a,b,ok;
int valid()
{long k;int r;
k=i;
while(k)
{r=k%10;
if(r>2)
return 0;k/=10;
}
return 1;
}
int main()
{fscanf(f,"%ld%ld%ld",&a,&b);
 ok=0;i=a*b;
 while(!ok)
  if(valid()&&i%a==0&&i%b==0)
    {ok=1;
    fprintf(g,"%ld",i);
    }
 else i++;
return 0;
}