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.

Examples

Input

apple


Output

apples


Input

bus


Output

buses


Input

box


Output

boxs
import java.util.*;
public class Main
{
    public static Scanner sc = new Scanner(System.in);
	public static void main(String[]args)
    {
      String str = sc.next();
      int len = str.length();
      if(str.charAt(len-1)!='s')
      	System.out.println(str + 's');
      else
        System.out.println(str + "es");
    }
}
