Challenges

Bitwise for Dummies
This is to provide you with an introductory experience of bit-wise ope...
Max. Marks: 6
Solved By : 109
Double the Number
Given an array A of size N and K. count all the number of elements suc...
Max. Marks: 8
Solved By : 187
Rotate Array
You are given an array of N length. You have to rotate the array right...
Max. Marks: 6
Solved By : 1578
Floating Number
Bob has a floating point number N. He wants to set the precision for 2...
Max. Marks: 4
Solved By : 5066
SwapMaster solves Symmetric Swap
The SwapMaster is known to be the greatest and fastest swapper of all ...
Max. Marks: 4
Solved By : 4187
String Matching
Cody has a sequence of characters N. He likes a sequence if it contain...
Max. Marks: 3
Solved By : 2347
Leap Year
Steve is playing a quiz game with his brother John. As Steve just lear...
Max. Marks: 6
Solved By : 3622
Project Teams
There are N students in a class and Teacher want to divide these stude...
Max. Marks: 5
Solved By : 4319
Circle of Numbers
All numbers in NumberLand are standing in a circle for a dancing cerem...
Max. Marks: 6
Solved By : 2978
Happy String
A happy string is a string in which each character is lexicographicall...
Max. Marks: 4
Solved By : 2235
Double the Number
Please select a challenge
Problem Statement
Given an array A of size N and K. count all the number of elements such that A[i] * 2 = K.

Input
The first line of the input contains a single integer T denoting the number of test cases. The first line of each test case contains two space separated integer N and K respectively. The second line of each test case contains N space separated integers A[i].

Output
For each test case, print a single line containing count.

Constraints
1 <= T <= 10 1 <= N, K <= 100 1 <= A[i] <= 100

Sample Input
1
7 14
14 37 7 7 7 40 44

Sample Output

3

Dcoded By: Saurav Chandra

Solved By: 187

Maximum Marks: 8