import sys
input=lambda: sys.stdin.readline().rstrip()
import bisect
n=int(input())
X=sorted([int(i) for i in input().split()])
A=[1]*n
for i,x in enumerate(X):
  mul=2
  while mul*x<=X[-1]:
    ind=bisect.bisect_left(X,mul*x)
    if mul*x==X[ind]:
      A[ind]=max(A[ind],A[i]+1)
    mul+=1
print(max(A))