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 {
 
	static final boolean debugMode = false;
 
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
 
		String s = sc.next();
		if (s.charAt(2) == s.charAt(3) && s.charAt(4) == s.charAt(5)) {
			System.out.println("Yes");
		} else {
			System.out.println("No");
		}
	}
 
	static int readInt(Scanner sc) {
		return Integer.parseInt(sc.next());
	}
 
	static void log(String s) {
		if (debugMode) {
			System.out.println(s);
		}
		return;
	}
}
 
class Pair {
	private int x;
	private int y;
 
	public int getX() {
		return x;
	}
 
	public void setX(int x) {
		this.x = x;
	}
 
	public int getY() {
		return y;
	}
 
	public void setY(int y) {
		this.y = y;
	}
 
	public Pair() {
 
	}
 
	public Pair(int x, int y) {
		this.x = x;
		this.y = y;
	}
 
}