#include<fstream.h>
#include<iostream.h>
 
   
 int main()  
 {   long a,b,m,x,pr,r,ok=0,n=0;
  
 fstream f("multiplu.in",ios::in);
     f>>a;  f>>b;  
 f.close();  
   
 while(ok==0)  
   {    n++;
        m=0;    
	x=n;
	pr=1;  
	while(x)
	{ r=x%2;
	  m=m+r*pr;
	  pr=pr*10;
          x=x/2;  }             
        if(m%a==0&&m%b==0)  
         ok=1;       }  
 fstream g("multiplu.out",ios::out);
     g<<m;  
   
    return 0;         }