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 <bits/stdc++.h>
using namespace std;
#define fast ios_base::sync_with_stdio(false); cin.tie(NULL); cout.tie(NULL);
#define ll long long
#define ld long double
#define tc() ll t;cin>>t;while(t--)
#define inp(n) ll n;cin>>(n)
#define inp2(n,m) ll n,m;cin>>(n);cin>>(m)
#define inp3(n,m,g) ll n,m,g;cin>>(n);cin>>(m);cin>>(g)
#define inps(s) string s;cin>>(s)
#define fr(i,n) for(ll i=0;i<n;i++)
#define rf(n,i) for(ll i=n-1;i>=0;i--)
#define vi vector<int >
#define vl vector<ll>
#define vd vector<ld>
#define vs vector<string >
#define pii pair<int,int>
#define pci pair<char ,int>
#define pic pair<int ,char>
#define psi pair<string ,int>
#define mii map<int ,int >
#define mci map<char ,int>
#define msi map<string ,int>
#define si set<int >
#define ss set<string>
#define pb push_back
#define mp make_pair
#define ft first
#define sd second
#define mem(a,b) memset(a,b,sizeof(a))
#define mod 1000000007

int main() {
    fast
    string s;
    cin>>s;
    int n = s.length();
    
    if(s[n-1]=='s'){
        s.push_back('e');
        s.push_back('s');
    }
    else{
        s.push_back('s');
    }
    cout<<s<<endl;
	return 0;
}