from collections import deque


def is_multiple_except_self(num, base) -> True:
    return num % base == 0 and num != base


def main():
    N = int(input())
    x = list(map(int, input().split()))
    x.sort()

    multiple_set = {}
    searching = deque()
    for idx, elm in enumerate(x):
        if elm in multiple_set:
            continue

        multiple_set[elm] = list(
            filter(lambda num: is_multiple_except_self(num, elm), x[idx:]))
        searching = deque((num, elm) for num in multiple_set[elm])
        while searching:

            current = searching.popleft()
            if current[0] in multiple_set:
                continue

            multiple_set[current[0]] = list(
                filter(lambda num: is_multiple_except_self(
                    num, current[0]), multiple_set[current[1]]))

            searching.extendleft((num, current[0])
                                 for num in multiple_set[current[0]])

    dp_table = {num: 1 for num in x}
    for num in x:
        for dest in multiple_set[num]:
            dp_table[dest] = max(dp_table[dest], dp_table[num]+1)

    print(max(dp_table.values()))


if __name__ == "__main__":
    main()