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: Wrong Answer)

import java.util.Scanner;
public class Main {
	public static void main(String args[]) {
    	String strBase = "coffee";
      	Scanner scanInputs =  new Scanner(System.in);
      	String strInput =  "";
      
      while(scanInputs.hasNext()) {
		  strInput = String.valueOf(scanInputs.next());      
          String strBaseChk = strBase.substring(2, 5);
          String strInputChk = strInput.substring(2, 5);

          if(strBaseChk.equals(strInputChk)) {
              System.out.println("Yes");
          } else {
              System.out.println("No");
          }
      }
    }
}