n,*a = map(int,open(0).read().split())
M = 300005
r,c = [0]*M, [0]*M
for v in a:
    if c[v] <= r[v]:
        for w in range(v*2,M,v):
            r[w] = max(r[w],r[v]+1)
        c[v] = r[v]+1
print(max(c))