Why am i getting segmention error

#1
#2

@navin
the problem is you have taken the graph to be 0-based index but the vertices given in the edges are 1-based index. So i think you how to correct it, otherwise you can ask.

while printing answer for cases, do i++.
Also take long long int to avoid WA.

#3

@navin mark the doubt as resolved if you will be able to solve it now, otherwise you may continue to ask your doubt.

#4

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