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Spread Of Infection

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1. You are given a graph, representing people and their connectivity.
2. You are also given a src person (who got infected) and time t.
3. You are required to find how many people will get infected in time t, if the infection spreads to neighbors of infected person in 1 unit of time.
Input Format
Input has been managed for you
Output Format
count of people infected by time t
Question Video
Constraints
None
Sample 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
6
3
Sample Output
4


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