Given an unsorted array of numbers, write a function that test whether array consists of consecutive numbers.

**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 an integer n denoting the size of the array. The following line contains n space separated integers forming the array.

**Output:**

Print "Yes" (without quotes) if array elements are consecutive.

Print "No" (without quotes) if array elemetns are non-consecutive.

**Constraints:**

1<=T<=10^2

1<=n<=10^5

1<=a[i]<=10^5

**Example:**

Input:

4

6

5 4 2 3 1 6

6

83 78 80 81 79 82

5

34 23 52 12 3

6

7 6 5 5 3 4

**Output:**

Yes

Yes

No

No

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