#include <stdio.h>
#include <stdlib.h>
#include <string.h>

int palindrome (int);

int main()
{
  int x,y,z,i,flag=0;
  while (scanf("%d %d",&x,&y)==2)
    {
      for(i=x;i<=y;i++)
	{
	  z = i*i;
	  if(palindrome(z))
	    {
	      flag = 1;
	      printf ("%d %d\n",i,z);
	    }
	}
      if(flag==0) printf ("-1 -1\n");
      flag = 0;
    }

  return (0);
}

int palindrome(z)
{
  char string[10];
  int i,j;

  snprintf(string,10,"%d",z);

  j = (strlen(string)/2) + 1;

  for(i=0;i<j;i++)
    {
      if(string[i]!=string[strlen(string)-i-1]) return(0);
    }

  return(1);

}