Problem:
Score : 100 points

Problem Statement

In some other world, today is December D-th.

Write a program that prints Christmas if D = 25, Christmas Eve if D = 24, Christmas Eve Eve if D = 23 and Christmas Eve Eve Eve if D = 22.

Constraints

22 \leq D \leq 25

D is an integer.

Input

Input is given from Standard Input in the following format:

D

Output

Print the specified string (case-sensitive).

Sample Input 1

25

Sample Output 1

Christmas

Sample Input 2

22

Sample Output 2

Christmas Eve Eve Eve

Be sure to print spaces between the words.

Solution in C# (Mono 4.6.2.0) (judge verdict: Accepted)

using System;
using System.Collections.Generic;
using System.Linq;

namespace ConsoleApp
{
    class Program
    {
        static void Main(string[] args)
        {
            var D = int.Parse(Console.ReadLine());

            switch (D)
            {
                case 25:
                    Console.WriteLine("Christmas");
                    break;
                case 24:
                    Console.WriteLine("Christmas Eve");
                    break;
                case 23:
                    Console.WriteLine("Christmas Eve Eve");
                    break;
                case 22:
                    Console.WriteLine("Christmas Eve Eve Eve");
                    break;
            }
        }
    }
}