QIF in OBH

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*Covid cases on campus are rising steadily and CTF has run out of space in Bakul and Parijaat!* There is no choice left but to convert the OBH hostel into a quarantine site as well. But there is a problem! Due to the interesting design choices of its architects, rooms are connected to each other through corridors and every room in the hostel is reachable from every other room. Formally, we rep

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solution.cppC++17

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