#include<bits/stdc++.h>

using namespace std;
const int MAXN = 1e5 + 5;
int n, a[MAXN], dp[MAXN], ans;
int main(){
  ios::sync_with_stdio(0), cin.tie(0), cout.tie(0);
  int n;
  cin >> n;
  for (int i = 1; i <= n; i++){
    cin >> a[i];
  }
  for (int i = 1; i <= n; i++){
    int tmp = dp[a[i]];
    for (int j = 1; j * j <= a[i]; j++){
      if (a[i] % j == 0){
        dp[a[i]] = max({dp[a[i]], dp[j] + 1, dp[a[i] / j] + 1});
      }
    }
    dp[a[i]] = max(dp[a[i]], 1);
    ans = max(ans, dp[a[i]]);
  }
  cout << ans;
  return 0;
}//