
Score : 100 points
Problem StatementIn 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.
InputInput is given from Standard Input in the following format:
S
OutputPrint the plural form of the given Taknese word.
Sample Input 1apple
Sample Output 1apples
apple ends with e, so its plural form is apples.
Sample Input 2bus
Sample Output 2buses
bus ends with s, so its plural form is buses.
Sample Input 3box
Sample Output 3boxs
