The Captain's Room

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    Failed in Scenario 0

    k = int(input()) klist = list(map(int, input().split()))

    lenlist = int(len(klist)/2)

    set1 = set([x for x in klist[:lenlist]]) set2 = set([x for x in klist[lenlist+1:]])

    captainroom = (set1 ^ set2)

    print(list(captainroom)[0])

    print(captainroom[0])