#include <bits/stdc++.h>

using namespace std;

const int N = 1e5 + 5;

int n, ans, a[N], dp[N];

int main() {
  ios::sync_with_stdio(0), cin.tie(0);
  cin >> n;
  for (int i = 1; i <= n; i++) {
    cin >> a[i];
  }
  for (int i = 1; i <= n; i++) {
    for (int j = 1; j <= sqrt(1.0 * a[i]); j++) {
      if (a[i] % j == 0) {
        dp[a[i]] = max({dp[a[i]], dp[j] + 1, dp[a[i] / j] + 1});
      }
    }
    ans = max(ans, dp[a[i]]);
  }
  cout << ans;
  return 0;
}