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 JavaScript (node.js v5.12) (judge verdict: Wrong Answer)

function Main(input) {
    input = input.split("\n");
    for (i=0; i < input.length; i++) {
        var N = parseInt(input[i])
        tmp = input[i].split("")
        var c1 = tmp[2]
        var c2 = tmp[3]
        var c3 = tmp[4]
        var c4 = tmp[5]
        if (c1 === c2 && c3 === c4) {
            console.log('Yes')
        } else {
            console.log('No')
        }
    }
}

Main(require("fs").readFileSync("/dev/stdin", "utf8"));