import sys,random,bisect
from collections import deque,defaultdict
from heapq import heapify,heappop,heappush
from itertools import permutations
from math import gcd,log

input = lambda :sys.stdin.readline().rstrip()
mi = lambda :map(int,input().split())
li = lambda :list(mi())

N = int(input())
A = li()

M = max(A)

dp = [0] * (M+1) 
for a in A:
    tmp = 1
    for d in range(1,a+1):
        if d*d > a:
            break

        if a % d == 0:
            tmp = max(tmp,dp[d]+1)
            tmp = max(tmp,dp[a//d]+1)
    dp[a] = max(dp[a],tmp)

print(max(dp))