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: Accepted)

#include<bits/stdc++.h>

using namespace std;

#define boost ios_base::sync_with_stdio(false);cin.tie(NULL);cout.tie(NULL);
#define ll long long int
#define vi vector<int>
#define vvi vector<vi>
#define pii pair<int, int>
#define vii vector<pii>
#define pb push_back
#define B begin()
#define E end()
#define F first
#define S second
#define loop(z, v) for(auto &z: v)
#define nl "\n"
#define fat 1000000007

int main()
{
    boost
    string s;
    cin >> s;

    if(s[2] == s[3] && s[4] == s[5]) cout << "Yes" << nl;
    else cout << "No" << nl;

    return 0;
}