#include <cassert>
#include <cmath>
#include <algorithm>
#include <iostream>
#include <iomanip>
#include <climits>
#include <map>
#include <queue>
#include <set>
#include <cstring>
#include <vector>

using namespace std;
typedef long long ll;

int main() {
  int N;
  cin >> N;
  int A[N];
  int A_max = 0;
  int remain_counter[300010];
  memset(remain_counter, 0, sizeof(remain_counter));

  for (int i = 0; i < N; ++i) {
    cin >> A[i];
    A_max = max(A_max, A[i]);
    remain_counter[A[i]]++;
  }

  int counter[300010];
  memset(counter, 0, sizeof(counter));
  bool checked[300010];
  memset(checked, false, sizeof(checked));
  int ans = 1;

  for (int i = 0; i <= A_max; ++i) {
    counter[i] = 1;
  }

  for (int i = 0; i < N; ++i) {
    int a = A[i];
    remain_counter[a]--;
    if (checked[a]) continue;
    checked[a] = true;

    int j = 2;
    while (a * j <= A_max) {
      int v = a * j;

      if (remain_counter[v] > 0) {
        counter[v] = max(counter[v], counter[a] + 1);
        ans = max(ans, counter[v]);
      }

      j += 1;
    }
  }

  cout << ans << endl;

  return 0;
}