import sys
input = sys.stdin.readline

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

for Ai in A:
    if Ai==1:
        dp[Ai] += 1
    else:
        for d in range(1, int(Ai**0.5)+1):
            if Ai%d==0:
                dp[Ai] = max(dp[Ai], dp[Ai//d]+1)
                dp[Ai] = max(dp[Ai], dp[d]+1)

print(max(dp))