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.Scanner;
public class Main {
	 public static void main(String args[]){
	Scanner scanner = new Scanner(System.in);
	// "abc"という文字列
	String a=scanner.next();

	 String str3 = String.valueOf(a.charAt(2));
	    String str4 = String.valueOf(a.charAt(3));
	    String str5 = String.valueOf(a.charAt(4));
	    String str6 = String.valueOf(a.charAt(5));
	    if(str3.equals(str4) && str5.equals(str6)){
	    		System.out.println("Yes");
	    }
	    else {
	    	System.out.println("No");
	    }

	}
}