import sys

input = sys.stdin.buffer.readline

N = int(input())
A = tuple(map(int, input().split()))
MAX = max(A)
INF = 100

divisors = [[] for _ in range(MAX + 1)]
for i in range(1, MAX + 1):
    for j in range(i * 2, MAX + 1, i):
        divisors[j].append(i)
dp = [-INF] * (MAX + 1)
for a in A:
    dp[a] = 1
    for x in divisors[a]:
        dp[a] = max(dp[a], dp[x] + 1)
print(max(dp))