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 os
import sys
from atexit import register
from io import BytesIO
sys.stdin = BytesIO(os.read(0, os.fstat(0).st_size))
sys.stdout = BytesIO()
register(lambda: os.write(1, sys.stdout.getvalue()))
input = lambda: sys.stdin.readline().rstrip('\r\n')
raw_input = lambda: sys.stdin.readline().rstrip('\r\n')

# (int(x) for x in input().split())
s = input().strip()
if s[-1] == 's':
    print(s + 'es')
else:
    print(s + 's')