import sys
input = sys.stdin.readline

N = int(input())
A = list(map(int, input().split()))
dp = [0]*(3*10**5+10)

for Ai in A:
    dp[Ai] = 1
    
    if Ai==1:
        continue
    
    i = 1
    
    while i*i<=Ai:
        if Ai%i==0:
            if i==1:
                dp[Ai] = max(dp[Ai], dp[i]+1)
            else:
                dp[Ai] = max(dp[Ai], dp[i]+1, dp[Ai//i]+1)
        
        i += 1

print(max(dp))