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.Scanner;

public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
      	
        // 入力
        String s = sc.next();
      	int l=s.length();
      	
      if(s.charAt(l-1)=='s'){
      	System.out.println(s+"es");
      }else{
        System.out.println(s+"s");
      }
      

    }
}


