# 先頭からdp的辞書でやるか
# 倍数約数で行ったり来たりするので間に合わない気がする

N = int(input())
A = list(map(int, input().split()))

from collections import defaultdict
A_position = defaultdict(list)
for i in range(N):
    A_position[A[i]].append(i)
    
#print(A_position)

div = defaultdict(list)
maxA = max(A)
for i in range(N):
    for q in range(A[i], maxA+1, A[i]):
        for r in A_position[q]:
            if r > i:
                div[r].append(i)

#print(div)

dp = [0]*(N)
dp[0] = 1
mx_dic = {}
for i in range(N):
    num = A[i]
    if num in mx_dic:
        mx_dic[num] += 1
    else:
        mx = 1
        for j in div[i]:
            mx = max(mx, dp[j]+1)
        mx_dic[num] = mx
    dp[i] = mx_dic[num]
#print(dp)

ans = max(dp)
print(ans)