#配るDP
from collections import defaultdict

N = int(input())
x = list(map(int, input().split()))
x.sort()
flag = defaultdict(int)

for xi in x:
    flag[xi] = 1
    
A = max(x)
dp = [1] * (A+1)

for xi in x:
    mult = 2
    
    while mult * xi <= A:
        if flag[mult*xi]:
            dp[mult*xi] = max(dp[mult*xi], dp[xi]+1)
        mult += 1
        
print(max(dp))