#include <bits/stdc++.h>
using namespace std;
const long long mod = 1000000007;
const int MAXN = 1000005;
int dp[MAXN];
int main() {
  ios::sync_with_stdio(false);
  cin.tie(nullptr);
  int n;
  cin >> n;
  int x;
  int maxn = 0;
  for (int i = 0; i < n; i++) {
    cin >> x;
    dp[x]++;
    maxn = max(maxn, dp[x]);
    for (int j = x * 2; j < MAXN; j += x) {
      dp[j] = max(dp[j], dp[x]);
    }
  }
  cout << maxn << endl;
  return 0;
}
