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: Accepted)

import java.util.*;
 
public class Main {
    public static void main(String args[]){
        Scanner stdIn = new Scanner(System.in);
 

        
        String s = stdIn.next();
        char c[] = s.toCharArray();
        //int c = stdIn.nextInt();
        //int x = stdIn.nextInt();
        //boolean flag = true;
        
        // for(int i = 0; i < s.length(); i++){
        //     a[i] = c[i] - 48;
        //     System.out.println(a[i]);
        // }
        //int sum = 0;
        //boolean flag = true;
        //for(int i = 0; i < s.length(); i++){
        //}
        
        if(c[2] == c[3] && c[4] == c[5]){
            System.out.println("Yes");
        }else{
            System.out.println("No");
        }
 
        //System.out.println();
        //System.out.print();
 
        stdIn.close();
    }
}