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: Wrong Answer)

#include<stdio.h>



int main(void){
    int N,n,count=0,insu=1,num;

    scanf("%d",&N);
    int a[N];
    for(int n=0;n<N;n++)a[n]=0;

    for(n=1;n<N;n++){
        num=n;

    for(int j=2;j<=n;j++){
        //if(n%j==0)insu++;
        //printf("doko");

        int j=2;
        while(num%j==0){
            a[j]++;
            num/=j;
        }
   }
    for (int i = 2; i <= n; i++)
	{	
		insu*=a[i]+1;
	}
        //if(insu==1)insu=0;
        count+=insu;
        insu=1;
    }

    printf("%d",count);
    return 0;
}