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 C (GCC 9.2.1) (judge verdict: Accepted)

#include<stdio.h>
#include<string.h>

int main (void){

    int s;
    char S[1003];
    char c;

    for(s=0;s<1000;s++){
        scanf("%c",&S[s]);

        if(S[s]=='\n'){
            break;
        }
    }

    if(S[s-1]=='s'){
        S[s+2]=S[s];
        S[s]='e';
        S[s+1]='s';

        for(int i=0;i<s+2;i++){
            printf("%c",S[i]);
        }
    }else{
        S[s+1]=S[s];
        S[s]='s';

        for(int i=0;i<s+1;i++){
            printf("%c",S[i]);
        }

    }






    return 0;
}