Timer is Running

Given an undirected graph and an edge, the task is to find if the given edge is a bridge in graph, i.e., removing the edge disconnects the graph.

**Input:**

The first line of the input contains an integer **'T'** denoting the number of test cases. Then **'T'** test cases follow. Each test case consists of two lines.

Description of test cases is as follows:

The First line of each test case contains two integers **'N' and 'M' ** which denotes the no of vertices and no of edges respectively.

The Second line of each test case contains** M **space-separated pairs **u** and **v** denoting that there is a bidirectional edge from **u** to **v.**

The third line contains two space-separated integers denoting the edge to be removed.

**Output:**

Output 1 if the edge is a Bridge and output 0 otherwise.

**Your Task:**

You don't need to read input or print anything. Your task is to complete the function **isBridge()** which takes the graph **g**, number of vertices **V **and the two end vertices **s **and **e **of an edge as inputs and returns true if the given edge is a Bridge. Else, it returns false.

**Expected Time Complexity:** O(N + M).

**Expected Auxiliary Space:** O(N).

**Constraints:**

1 <= T <= 10

1 <= N, M <= 100000

0 <= u, v <= N-1

**Example:**

**Input:**

2

4 3

0 1 1 2 2 3

1 2

5 5

1 2 2 0 1 0 3 4 3 0

2 0

**Output:**

1

0

**Note:** The **Input/Output** format and **Example** is given are used for the system's internal purpose, and should be used by a user for **Expected Output** only. As it is a function problem, hence a user should not read any input from the stdin/console. The task is to complete the function specified, and not to write the full code.

Author: harshitsidhwa

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