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

xma = max(x)
x.sort()
dp = [-1] * (xma+1)
for i in range(N):
    dp[x[i]] = 1

for i in range(N):
    v = x[i]    
    for j in range(2*v, xma+1, v):
        if dp[j] != -1:
            dp[j] = max(dp[j], dp[v] + 1)

ans = max(dp)        
print(ans)