N = int(input())
A = list(map(int,input().split()))
C = 3 * 10 ** 5 + 1
dat = [[] for _ in range(C)]
for i in range(1,C):
    for j in range(i * 2,C,i):
        dat[j].append(i)
dp = [0] * C
for a in A:
    dp[a] = max(dp[a],1)
    _max = 0
    for v in dat[a]:
        if dp[v] + 1 > _max:
            _max = dp[v] + 1
    dp[a] = max(dp[a],_max)
print(max(dp))