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.util.*;

public class Main{
    public static void main(String[]args){
        Scanner sc = new Scanner(System.in);
    
        int K =sc.nextInt();
        int N = sc.nextInt();
        Integer[]home = new Integer[N];
        for(int i=0;i<home.length;i++){
            home[i]=sc.nextInt();
        }
        
        int[]distance = new int[N];
        int ans=0;
        for(int i=0;i<N-1;i++){
            distance[i]=home[i+1]-home[i];
            ans+=distance[i];
        }
        distance[N=1]=K-home[N-1]+home[0];
        ans+=distance[N-1];
        
        Arrays.sort(distance);
        ans-=distance[N-1];
        System.out.println(ans);
        
    }
}