#include <stdio.h>

int Square_Symmetry(int n)
{
	int m = n*n,a[6],k = 0;
	while(m)
	{
		a[k++] = m%10;
		m/=10;
	}
	m = 0;
	k--;
	while(m < k)
	{
		if(a[m] != a[k]) return 0;
		m++;
		k--;
	}
	return 1;	
}

int main()
{
	int i;
	for(i = 1; i < 256; i++)
		if(Square_Symmetry(i))
			printf("%d\n",i);
	return 0;
}