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
#include<iostream>
#include<cstring>
using namespace std;
int main()
{
    string s;
    cin>>s;
    cout<<s<<(s[s.size()-1]=='s'?"es":"s");
    return 0;
}