#include <bits/stdc++.h>

using namespace std;

int main() {
  ios_base::sync_with_stdio(0);
  cin.tie(0);

  int n;
  cin >> n;
  vector<int> a(n);
  for (int i = 0; i < n; i++)
    cin >> a[i];

  int ret = 1;
  vector<int> len(300000+1, 1);
  
  for (int i = n-1; i >= 0; i--) {
    int x = a[i];
    ret = max(ret, len[x]);
    for (int i = 1; i * i <= x; i++) {
      if (x % i) continue;
      int j = x / i;
      if (i < x) len[i] = max(len[i], len[x] + 1);
      if (j < x) len[j] = max(len[j], len[x] + 1);
    }
  }
  cout << ret << endl;
  
  return 0;
}