#### This is the time when Dr. Stephen wants to distribute chocolates. He has N number of boxes in a row, and each box contains some chocolates. Now, He wants to distribute chocolates to K children keeping in mind that distribution should be as fair as possible. To fairly distribute the gift boxes, he decided to give the maximum number of chocolates equally to K children.

#### For Example: for the given boxes of chocolates [3,2,2,5,4,1] and 5 students.

```
Output: 2
If there is no restriction on choosing the boxes then the maximum number of chocolates the 5 students equally can have is 3 by picking all boxes except the box at index 2(0-based indexing). So total candies will be 3+2+5+4+1 = 15 and each of the 5 students will get 15/5=3 candies.
But we are allowed to choose only consecutive boxes. So if we choose boxes [0,1] then 3+2=5 then each student will have only 1 chocolate and when we choose boxes[4,6] as 5+4+1=10 then each student will have 2 chocolates. So the maximum number of chocolates each student can get is 2.
```

```
The first line of input contains a single integer T, representing the number of test cases or queries to be run.
Then the T test cases follow.
The first line of each test case contains two single space-separated integers N, and K, denoting the total number of boxes and the total number of students respectively.
The second line of each test case contains 'N' single space-separated integers representing the count of chocolates in each of the N boxes.
```

```
For each test case, print an integer denoting the maximum number of chocolates each child can get in a single line
```

##### Constraints:

```
1 <= T <= 10
1 <= N <= 10^5
1 <= K <= 10^5
0 <= boxes[i] <= 10^5
Time Limit: 1 sec
```

##### Sample Input 1:

```
2
5 3
1 2 3 4 5
5 4
1 2 3 4 5
```

##### Sample Output 1:

```
5
3
```

##### Explanation for Sample 1:

```
For the first test case, we can choose the boxes [0,4] as 1+2+3+4+5=15 each student will have 5 chocolates.
For the second test case, You can choose the boxes [2, 4] as 3+4+5=12, each student will have 3 chocolates.
```

##### Sample Input 2:

```
1
5 8
1 2 3 4 5
```

##### Sample Output 2:

```
0
```

##### Explanation for Sample 2:

```
For the first test case, there is no way to choose consecutive boxes and divide chocolates from those boxes equally among 8 students
```