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

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

  ll N; cin >> N;
  vector<ll> A(N); for (ll i = 0; i < N; i++) cin >> A[i];
  vector<ll> dp(300005, 0);

  for (int i = 0; i < N; i++) {
    ll t = A[i], temp = 0;
    for (int j = 1; j <= sqrt(t); j++) {
      if (t % j) continue;
      ll f1 = j, f2 = t / j;
      if (f1 < t) temp = max(temp, dp[f1]);
      if (f2 < t) temp = max(temp, dp[f2]);
    }
    dp[t] = temp + 1;
  }

  ll ans = 0;
  for (int i = 0; i < 300005; i++) {
    ans = max(ans, dp[i]);
  }
  cout << ans << '\n';
  return 0;
}