Doubt regarding Fire Escape Routes solution

I have just started learning Graphs and tried out the problem Fire Escape Routes (FIRESC) on codechef using DFS traversal.
Can someone please point out the mistake in my code? It’s giving wrong answer.
http://www.codechef.com/viewsolution/3791285

According to the question

“The friendship is mutual. This means that if employee i is a friend of employee j then employee j is a friend of employee i as well”

So this means that the graph you need to construct should be undirected. I just made your graph undirected and it was an accepted.

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Thanks a lot, great help

I dont know which test case is going wrong.
Can anyone please help me finding the mistake
https://www.codechef.com/viewsolution/33234097

plz check the code
https://www.codechef.com/LRNDSA08/submit/FIRESC