Problem:
Score : 100 points

Problem Statement

A string of length 6 consisting of lowercase English letters is said to be coffee-like if and only if its 3-rd and 4-th characters are equal and its 5-th and 6-th characters are also equal.

Given a string S, determine whether it is coffee-like.

Constraints

S is a string of length 6 consisting of lowercase English letters.

Input

Input is given from Standard Input in the following format:

S

Output

If S is coffee-like, print Yes; otherwise, print No.

Sample Input 1

sippuu

Sample Output 1

Yes

In sippuu, the 3-rd and 4-th characters are equal, and the 5-th and 6-th characters are also equal.

Sample Input 2

iphone

Sample Output 2

No

Sample Input 3

coffee

Sample Output 3

Yes

Solution in C++14 (GCC 5.4.1) (judge verdict: Wrong Answer)

# include <bits/stdc++.h>
# define int        long long
# define all(vc)   vc.begin(),vc.end()
# define alll(vc)  vc.rbegin(),vc.rend()
# define pb        push_back
# define fi        first
# define se        second
# define speed     ios_base::sync_with_stdio(false);cin.tie(NULL);cout.tie(NULL)
# define time      cerr << "\nTime elapsed: " << 1.0 * clock() / CLOCKS_PER_SEC << " s.\n"
 
using namespace std;

void solve(){
    int l, r;
    string s;
    cin >> s;
    if( s[2] == s[3] && s[4] == s[5] ) cout<<"YES";
    else cout<<"NO"; 

}

int32_t main(){
    speed;
    int n = 1;
    //cin >> n;
    while( n-- ){
         solve();
         cout<<'\n';
    }

    time;
}