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 PHP (7.4.4) (judge verdict: Accepted)

<?php
fscanf(STDIN, "%d", $d);

switch ($d) {
    case $d === 22:
        echo 'Christmas Eve Eve Eve';
        break;
    case $d === 23:
        echo 'Christmas Eve Eve';
        break;
    case $d === 24:
        echo 'Christmas Eve';
        break;
    case $d === 25:
        echo 'Christmas';
        break;
}