Has Path?

easy
1. You are given a graph, a src vertex and a destination vertex.
2. You are required to find if a path exists between src and dest. If it does, print true 
     otherwise print false.

Input Format

Input has been managed for you

Output Format

true if path exists, false otherwise

Constraints

None

Notice

Try First, Check Solution later

1. You should first read the question and watch the question video.
2. Think of a solution approach, then try and submit the question on editor tab.
3. We strongly advise you to watch the solution video for prescribed approach.

Example

Input
7
8
0 1 10
1 2 10
2 3 10
0 3 10
3 4 10
4 5 10
5 6 10
4 6 10
0
6
Output
true
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