from collections import defaultdict
from bisect import bisect_left
N = int(input())
A = list(map(int,input().split()))
MAX = max(A)
memo = [[] for _ in range(MAX+1)]
for i,a in enumerate(A):
    memo[a].append(i)
Aset = set()
dp = [1] * N
for i in range(N):
    ai = A[i]
    if ai in Aset:
        continue
    Aset.add(ai)
    for m in range(2,(MAX//ai) + 1):
        if memo[ai * m] == []:
            continue
        index = bisect_left(memo[ai * m],i)
        if index == len(memo[ai * m]):
            continue
        nxi = memo[ai * m][index]
        dp[nxi] = max(dp[i] + 1,dp[nxi])
print(max(dp))