#include<iostream.h>
#include<fstream.h>
#include<stdlib.h>
#include<stdio.h>

int main()
{   int a,b,x,ok=0,n=0;
    char *p;

fstream f("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("multiplu.out",ios::out);
    g<<x;

   return 0;         }