#include<fstream.h>
ifstream f("multiplu.in");
ofstream g("multiplu.out");
 long a,b;
 long cmmdc(long a,long b)
 {
 while(a!=b)
	if(a>b)a-=b;
	else b-=a;
 return a;
 }
 long cmmmc(long a,long b)
 {
 long p=a*b;
 return (p/cmmdc(a,b));
 }
 int binar(long long n)
 {
 while(n)
 {
	if(n%10>1)return 0;
	n/=10;
 }
 return 1;
 }
 int main()
 {
 f>>a>>b;
 long mult;
 mult=cmmmc(a,b);
 long k=1;
 long long M=k*mult;
 while (!binar(M))
 {
 k++;M=k*mult;
 }
 g<<M<<"\n\r";
 f.close();
 g.close();
 return (0);

 }