import bisect
import collections
N = int(input())
A = list(map(int,input().split()))
CA = collections.Counter(A)
MA = max(A)
A.sort()
for a in A:
    i=2
    while MA>=a*i:
        if CA[a*i]>0:
            CA[a*i]=max(CA[a*i],CA[a]+1)
        i+=1

print(max(CA.values()))