Problem:
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.

Sample Input 1

apple

Sample Output 1

apples

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

Sample Input 2

bus

Sample Output 2

buses

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

Sample Input 3

box

Sample Output 3

boxs

Solution in Fortran (GNU Fortran 9.2.1) (judge verdict: Accepted)

      PROGRAM piyo
      IMPLICIT NONE
      character(1000) :: s
      integer :: len
      
      read*,s
      len = len_trim( s )
      
      
      if(s(len:len)=='s')then
        print*,s(1:len)//'es'
      else
        print*,s(1:len)//'s'
      end if
      
      
      
      stop
      !debugg
      
      
      
      END PROGRAM