#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];
  }
  sort(a.begin(),a.end());

  vector<int> v(1000001, 0);
  for(int i = 0; i < n; i++){
    for(int j = a[i] * 2; j < 1000001; j+=a[i]){
      v[j] = max(v[j], v[a[i]] + 1);
    }
  }
  cout << *max_element(v.begin(),v.end()) << endl;

  return 0;
}