In the Kingdom of AtCoder, people use a language called Taknese, which uses lowercase English letters.
In Taknese, the plural form of a noun is spelled based on the following rules:
- If a noun's singular form does not end with s, append s to the end of the singular form.
- If a noun's singular form ends with s, append es to the end of the singular form.
You are given the singular form S of a Taknese noun. Output its plural form.

-----Constraints-----
- S is a string of length 1 between 1000, inclusive.
- S contains only lowercase English letters.

-----Input-----
Input is given from Standard Input in the following format:
S

-----Output-----
Print the plural form of the given Taknese word.

-----Sample Input-----
apple

-----Sample Output-----
apples

apple ends with e, so its plural form is apples.

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