#t191. 删除单词后缀

删除单词后缀

Removing Word Suffixes

Problem Description

Given a word, if it ends with the suffix er, ly, or ing, remove that suffix (it is guaranteed that the word is non-empty after removal); otherwise do nothing.

Input Format

One line containing a word (with no spaces inside; the maximum length of a word is 3232).

Output Format

Output the word after processing according to the requirements.

Sample Input

referer

Sample Output

refer