Z = 3 * 10**5
Z = 10
D = [[0] for _ in range(Z+1)]
for i in range(1, Z+1):
    for j in range(i+i, Z+1, i):
        D[j].append(i)

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

inf = float("inf")
dp = [-inf] * (Z+1)
dp[0] = 0
for a in A:
    for d in D[a]:
        dp[a] = max(dp[a], dp[d] + 1)

print(max(dp))