A group of connected 1s forms an island now your task is to complete the method **findIslands** which returns the no of islands present. The function takes three arguments the first is the boolean matrix A and then the next two arguments are N and M denoting the size of the matrix A .

**Input:**

The first line of input will be the no of test cases T then T test cases follow. The first line of each test case contains Two space separated integers N and M. Then in the next line are the NxM inputs of the matrix A separated by space .

**Output:**

The output in the expected output will be the total no of islands present.

**Constraints:**

1<=T<=100

1<=N,M<=50

0<=A[][]<=1

**Example(To be used only for expected output) :
Input**

1

3 3

1 1 0 0 0 1 1 0 1

2

The graph will look like

1 1 0

0 0 1

1 0 1

Here two islands will be formed

First island will be formed by elements { A[0][0] , A[0][1], A[1][2], A[2][2] }

Sec island will be formed by { A[2][0] }

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