The Captain's Room

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    Enter your code here. Read input from STDIN. Print output to STDOUT

    k = int(input()) l = list(map(int,input().split())) l.sort()

    for i in range(0,len(l)-1,k): if l[i] != l[i+4]: break

    else:
        i = len(l) - 1    
    

    print(l[i])