AT_abc476_a [ABC476A] Appender

You are given a string $ S $ consisting of lowercase English letters. Output the string $ T $ determined as follows. - If the last character of $ S $ is `e`, $ T $ is the string obtained by appending `r` to the end of $ S $ . - If the last character of $ S $ is not `e`, $ T $ is the string obtained by appending `er` to the end of $ S $ .

The input is given from Standard Input in the following format: > $ S $

Output the answer.

### Sample Explanation 1 The last character of `live` is `e`, so the string `liver`, obtained by appending `r` to the end of `live`, is the string $ T $ to be outputted. ### Sample Explanation 2 The last character of `femur` is not `e`, so the string `femurer`, obtained by appending `er` to the end of `femur`, is the string $ T $ to be outputted. ### Sample Explanation 3 The last character of `chimpanzee` is `e`, so the string `chimpanzeer`, obtained by appending `r` to the end of `chimpanzee`, is the string $ T $ to be outputted. ### Constraints - $ S $ is a string consisting of lowercase English letters. - The length of $ S $ is between $ 1 $ and $ 10 $ , inclusive.