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

template <typename T>
inline bool chmax(T &a, T b) {
  if (a < b) {
    a = b;
    return true;
  }
  return false;
}

int main() {
  int n;
  cin >> n;
  vector<int> a(n);
  for (auto &&t : a) cin >> t;
  vector<int> dp(100010, 0);
  for (int i = 0; i < n; i++) {
    int Max = 0;
    for (int d = 1; d * d <= a[i]; d++) {
      if (a[i] % d != 0) continue;
      chmax(Max, dp[d]);
      chmax(Max, dp[a[i] / d]);
    }
    dp[a[i]] = Max + 1;
  }
  cout << *max_element(begin(dp), end(dp)) << "\n";
}