#include<iostream.h>
#include<fstream.h>  
#include<stdlib.h>
#include<string.h>
#include<stdio.h>  
   
 int main()  
 {   int a,b,x,ok=0,n=0;  
     char *p;  
  
 fstream f("E:\\multiplu.in",ios::in);
     f>>a;  f>>b;  
 f.close();  
   
 while(ok==0)  
   {    n++;  
        x=n;  
	itoa(x,p,2);
        x=atoi(p);     
        if(x%a==0&&x%b==0)  
         ok=1;       }  
 fstream g("E:\\multiplu.out",ios::out);  
     g<<x;  
   
    return 0;         }