Score : $100$ points

Problem Statement

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.

apple

apples

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

bus

buses

bus ends with s, so its plural form is buses.

box

boxs