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 Java8 (OpenJDK 1.8.0) (judge verdict: Runtime Error)

import java.io.*;
import java.util.*;
import java.lang.String;
import java.util.Arrays;

import static java.lang.Integer.*;

public class Main extends PrintWriter {
    Main() { super(System.out, true); }
    Scanner sc = new Scanner(System.in);
    public static void main(String[] $) {
        Main o = new Main(); o.main(); o.flush();
    }
    //took bsearch from Dukkha
    private static int binSearch(Integer[] arr, int number){
        int left=0,right=arr.length-1,mid=(left+right)/2,ind=0;
        while(left<=right){
            if(arr[mid]<=number){
                ind=mid+1;
                left=mid+1;
            }
            else
                right=mid-1;
            mid=(left+right)/2;
        }
        return ind;
    }

    void main() {

        String S = sc.next();
        if(S.charAt(3) == S.charAt(4) && S.charAt(5) == S.charAt(6)){
            print("Yes");
        }
        else print("No");

    }
}