#include <bits/stdc++.h>
using namespace std;
#define rep(i, n) for (int i = 0; i < int(n); i++)
#define all(v) begin(v), end(v)

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);
  rep(i, n) cin >> a[i];
  vector<int> dp(n);
  vector<int> R(100010, -1);
  rep(i, n) {
    dp[i] = 1;
    for (int d = 1; d * d <= a[i]; d++) {
      if (a[i] % d != 0) continue;
      if (R[d] != -1) chmax(dp[i], dp[R[d]] + 1);
      if (R[a[i] / d] != -1) chmax(dp[i], dp[R[a[i] / d]] + 1);
    }
    R[a[i]] = i;
  }
  cout << *max_element(all(dp)) << "\n";
}