# yukicoder No.390 最長の数列

N = int(input())
X = sorted([int(x) for x in input().split()])
l = [1] * N

for (i, x) in enumerate(X):
    kouho = []

    for (j, y) in enumerate(X[:i]):
        if x % y == 0:
            kouho.append(l[j])

    if kouho != []:
        l[i] = max(kouho) + 1 

print(max(l))