Does array represent Heap
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  Difficulty: Basic   Marks: 1

Given an array A of size N, the task is to check if the given array represents a Binary Max Heap.

Input:
The first line of input contains an integer T denoting the number of test cases. Then T test cases follow. Each test case contains two lines. The first line of input contains an integer N denoting the size of the array. Then in the next line are N space separated array elements.

Output:
If array represents a Binary Max Heap, print "1", else print "0" (without quotes).

Constraints:
1 <= T <= 100
1 <= N <= 107
1 <= Ai <= 1015

Example:
Input:

2
6
90 15 10 7 12 2
6
9 15 10 7 12 11

Output:
1
0

Explanation:
Testcase 1:
Array of first elements represents Binary Max Heap, so output is 1.

 

** For More Input/Output Examples Use 'Expected Output' option **

Author: Shubham Joshi 1


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