def pickingNumbers(a):
    # Write your code here
    record = []
    for element_original in sorted(a):
        l = []
        for element_copy in sorted(a):
            l.append(element_original - element_copy)
        record.append(max(l.count(0) + l.count(1), l.count(0) + l.count(-1)))
    return max(record)