/* -*- coding: utf-8 -*-
 *
 * 2218.cc:  No.2218 Multiple LIS - yukicoder
 */

#include<cstdio>
#include<algorithm>
 
using namespace std;

/* constant */

const int MAX_N = 100000;
const int MAX_A = 100000;

/* typedef */

/* global variables */

int as[MAX_N], dp[MAX_A + 1];

/* subroutines */

inline void setmax(int &a, int b) { if (a < b) a = b; }

/* main */

int main() {
  int n;
  scanf("%d", &n);
  for (int i = 0; i < n; i++) scanf("%d", as + i);

  for (int i = n - 1; i >= 0; i--) {
    int ai = as[i];
    dp[ai]++;

    for (int p = 2; p * p <= ai; p++)
      if (ai % p == 0) {
	int q = ai / p;
	setmax(dp[p], dp[ai]);
	setmax(dp[q], dp[ai]);
      }
    setmax(dp[1], dp[ai]);
  }

  printf("%d\n", *max_element(dp, dp + MAX_A + 1));

  return 0;
}