#include <bits/stdc++.h>
using namespace std;

#define int long long
#define rep(i, l, r) for (int i = (int)(l); i < (int)(r); i++)
#define all(x) (x).begin(), (x).end()
#define sz(x) ((int)x.size())
template <class T> bool chmax(T &a, T b) {
  if (a < b) {
    a = b;
    return 1;
  }
  return 0;
}
template <class T> bool chmin(T &a, T b) {
  if (a > b) {
    a = b;
    return 1;
  }
  return 0;
}

/*
 */

using vi = vector<int>;
using vvi = vector<vi>;
using P = pair<int, int>;

int dp[301010];

signed main() {
  int n;
  cin >> n;

  int ans = 0;
  rep(i, 0, n){
    int a; 
    cin >> a;

    int ma = 1;
    rep(j, 1, a/j+1) if(a%j == 0){
      if(a != 1) chmax(ma, dp[j]+1);
      if(j > 1) chmax(ma, dp[a/j]+1);
    }
    chmax(dp[a], ma);
    chmax(ans, ma);
  }
  cout << ans << endl;

  return 0;
}