#include<stdio.h>
int main()
{
int m,n,t,i,j,count=0,l,sum=1,a=0;
scanf("%d%d",&m,&n);
if(m>n){t=m;m=n;n=t;}
for(i=m;i<=n;i++)
{j=i;
do{
count++;
j=j/10; }while(j!=0);
for(l=1;l<=count;l++)
{sum=10*sum;}
if((i*i)%sum==i)
{printf("%d\n",i);
a++;}}
if(a==0)
printf("No Answer");
return 0;
}