#include<stdio.h>

long long int a,b,alfa;

long int check(long long int x)
{
 long long int aux;
 int c,ok=1;
 aux=x;
 while(aux)
 {
  c=aux%10;
  if(c!=0&&c!=1) {ok=0;break;}
  aux/=10;
 }
if(ok) return 1;
else return 0;
}


int main()
{
FILE*in=fopen("multiplu.in","r");
FILE*out=fopen("multiplu.out","w");
fscanf(in,"%lld %lld",&a,&b);
while(1)
{
 alfa+=a*b;
 if(check(alfa)) {fprintf(out,"%lld",alfa);break;}
}

fcloseall();
return 0;
}