Recently, Colonel By has stated that clubs are not allowed to use discord servers as a means of communication. Therefore, in accordance with this new policy, the Colonel By computing club wants to create a program that will replace every instance of discord with classroom.

Since computing club is busy with other things, they have given the task to you!

Input Specification

The first and only line of input will contain a string consisting solely of spaces and lowercase letters.

Note: Substrings with consecutive instances of discord, such as discordiscord, will not appear in the string.

Output Specification

Output the original string but with each instance of the word discord being replaced by classroom.

Sample Input 1

meeting times will be posted on discord

Sample Output 1

meeting times will be posted on classroom

Sample Input 2

i really like discor because discord is user friendly

Sample Output 2

i really like discor because classroom is user friendly