N = int(input())
x = sorted(list(map(int,input().split())))
M = max(x) + 1
dp = [0] * M
ans = 0
for i in range(N):
	dp[x[i]] = 1
for i in range(N):
	for j in range(x[i] * 2,M,x[i]):
		if dp[j] == 0:
			continue
		dp[j] = max(dp[j],dp[x[i]] + 1)
	ans = max(ans,dp[x[i]])
print (ans)