# coding: utf-8
import array, bisect, collections, heapq, itertools, math, random, re, string, sys, time

sys.setrecursionlimit(10 ** 7)
INF = 10 ** 20
MOD = 10 ** 9 + 7


def II(): return int(input())
def ILI(): return list(map(int, input().split()))
def IAI(LINE): return [ILI() for __ in range(LINE)]
def IDI(): return {key: value for key, value in ILI()}


def solve(N, x):
    x.sort()
    num_max = max(x) + 1
    dp = [0] * num_max
    ans = 0
    for i in range(N):
        dp[x[i]] = 1
    for i in range(N):
        for j in range(x[i] * 2, num_max, x[i]):
            if dp[j] == 0:
                continue
            dp[j] = max(dp[j], dp[x[i]] + 1)
        ans = max(ans, dp[x[i]])
    
    return ans


def main():
    N = II()
    x = ILI()
    print(solve(N, x))


if __name__ == "__main__":
    main()