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

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


L = [0] * (Z+1)
for a in A:
    M = max(L[r] for r in R[a])
    L[a] = M + 1


ans = max(L)
print(ans)