#define _CRT_SECURE_NO_WARNINGS
#include<stdio.h>
#include<stdlib.h>
#include<math.h>
#include<string.h>
#include<Windows.h>
#include<stdio.h>


void main()
{
	for (int j = 0; j < 4; j++)
	{
		printf("%4d", j);
	}
	for (int i = 0; i < 256; i++)
	{
		int n = pow(i, 2),m;
		char str[10];
		sprintf(str, "%d", n);
		m = strlen(str);
		int a[10];
		for (int j = 0; j<m; j++)
		{
			a[j] = n % 10;
			n = n / 10;
			
		}
		for (int k = 0; k < m/2; k++)
		{
			if (a[k] != a[m - k - 1])
				break;
			else if (a[k] == a[m - k - 1] && k + 1 == m / 2)
			{
				printf("%4d", i);
			}
		}
	}
	
	system("pause");
}