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 Python (3.4.3) (judge verdict: Runtime Error)

N, X, Y= map(int, input().split())
K = [0]*(N-1)
for i in range(1,N):
    for j in range(i+1, N+1):
        idx = min([j-i, abs(X-i)+ abs(j-Y)+1, abs(Y-i) + 1 + abs(X-j)])-1
        K[idx] +=1
for value in K:
    print(value)