#include <bits/stdc++.h>
using namespace std;
const int MAX = 100000;
int main(){
  int N;
  cin >> N;
  vector<int> A(N);
  for (int i = 0; i < N; i++){
    cin >> A[i];
  }
  vector<vector<int>> F(MAX + 1);
  for (int i = 1; i <= MAX; i++){
    for (int j = i; j <= MAX; j += i){
      F[j].push_back(i);
    }
  }
  vector<int> dp(MAX + 1, 0);
  int ans = 0;
  for (int i = 0; i < N; i++){
    int tmp = 0;
    for (int j : F[A[i]]){
      tmp = max(tmp, dp[j] + 1);
    }
    dp[A[i]] = tmp;
    ans = max(ans, tmp);
  }
  cout << ans << endl;
}