using System;

public class Program

{

         static void Main(string[] args)

        {

            // Set the range

            int yearFrom = 1900;

            int yearTo = 2099;

​

            // Rest from division by 100 from year

            int from = yearFrom % 100;

            int to = yearTo % 100;

​

            Dictionary<int, int> dict = new Dictionary<int, int>();

​

            dict.Add(1, 31);

            dict.Add(2, 28);

            dict.Add(3, 31);

            dict.Add(4, 30);

            dict.Add(5, 31);

            dict.Add(6, 30);

            dict.Add(7, 31);

            dict.Add(8, 31);

            dict.Add(9, 30);

            dict.Add(10, 31);

            dict.Add(11, 30);

            dict.Add(12, 31);

​

            for (int year = from; year <= to; year++)

            {

                for (int month = 1; month <= 12; month++)

                {

                    int maxDay = dict[month];

​

                    if (maxDay == 2 && year % 4 == 0) // yeap year for Feb.

                    {

                        maxDay++;

                    }

​

                    for (int day = 1; day <= maxDay; day++)

                    {

                        if (Math.Pow(year, 2) == Math.Pow(month, 2) + Math.Pow(day, 2))

                        {

                            Console.WriteLine(year + " " + month + " " + day);

                        }

                    }

                }

            }

​

            Console.ReadLine();

        }

}