using System;

using System.Collections.Generic;

using System.Linq;

public class Program

{

    public static void Main()

    {

        List<int> numbers = Console.ReadLine().Split(' ').Select(int.Parse).ToList();

        List<int> result = new List<int>();

        foreach(int number in numbers)

        {

            if((int)Math.Sqrt(number) == Math.Sqrt(number))

            {

                result.Add(number);

            }

        }

        result.Sort((b, a) => a.CompareTo(b));

        Console.WriteLine(string.Join(" ", result));

    }

}