#include <iostream>
#include <math.h>
using namespace std;
int main()
{
    int n;
    cin >> n;
    for (int i = 5; i <= n; i++)
    {
        int sum = i*i;
        int flag = 0;
        int ans = 0;
        for (int j = 1; sum!= 0;j = j*10)
        {
            ans = ans +(sum%10)*j;
            sum/=10;
            if (ans == i)
            {
                flag = 1;
            }
        
        
        }
        if (flag == 1)
        {
            cout<< i << " ";
        }
    }
    
}