In C++ please

In the Kingdom, 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

• SS is a string of length 11 between 10001000, inclusive.
• SS contains only lowercase English letters

Sample Input 1

apple 

Sample Output 1

apples 

Sample Input 2

bus 

Sample Output 2

buses