from bisect import bisect_left
import sys
input = sys.stdin.readline

def main():
    n = int(input())
    X = list(map(int, input().split()))
    X.sort()

    Idxs = [[] for _ in range(10**6 + 1)]
    for i in range(n):
        Idxs[X[i]].append(i)
    L = [0 for _ in range(10**6 + 1)]
    for i in range(10**6 + 1):
        L[i] = len(Idxs[i])

    DP = [[-1, -1] for _ in range(10**6 + 1)]
    for i in range(1, 10**6 + 1):
        if Idxs[i]:
            DP[i] = [1, Idxs[i][0]]
    ans = 1
    for i in range(1, 10**6 + 1):
        if DP[i][0] != -1:
            for j in range(2 * i, 10**6 + 1, i):
                if Idxs[j]:
                    idx = bisect_left(Idxs[j], DP[i][1])
                    if idx == L[j]:
                        continue
                    k = Idxs[j][idx]
                    if DP[i][0] + 1 > DP[j][0]:
                        DP[j] = [DP[i][0] + 1, k]
                    elif DP[i][0] + 1 == DP[j][0]:
                        if k < DP[j][1]:
                            DP[j][1] = k
                    ans = max(ans, DP[j][0])
    print(ans)

if __name__ == '__main__':
    main()