#include<bits/stdc++.h>
using namespace std;
#ifdef LOCAL_DEBUG
  #include "LOCAL_DEBUG.hpp"
#endif
#define int long long

signed main(){

  int n; cin >> n;
  vector<int> a(n);
  for(int i = 0; i < n; i++){
    cin >> a[i];
  }

  vector<int> dp(3e5+1, 0);
  for(int i = 0; i < n; 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);
        if(j != 1) dp[a[i]] = max(dp[a[i]], dp[a[i] / j] + 1);
      }
    }
    dp[a[i]] = max(dp[a[i]], 1LL);
  }
  cout << *max_element(dp.begin(),dp.end()) << endl;

  return 0;
}