#include <bits/stdc++.h>
using namespace std;
#define REP(i,a,n) for(int i=(a); i<(int)(n); i++)
#define rep(i,n) REP(i,0,n)
#define FOR(it,c) for(__typeof((c).begin()) it=(c).begin(); it!=(c).end(); ++it)
#define ALLOF(c) (c).begin(), (c).end()
typedef long long ll;
typedef unsigned long long ull;


int main(){
  int N;
  cin >> N;
  vector<int> v;
  rep(i,N){
    int a;
    cin >> a;
    v.push_back(a);
  }

  unordered_map<int,int> m;
  int ret = 1;
  rep(i,N){
    if(m.count(v[i]) == 0){
      int p = 2;
      while(p*v[i]<=300000){
        if(m.count(p*v[i]) == 0){
          m[p*v[i]] = 2;
        }
        p++;
      }
    }else{
      ret = max(ret, m[v[i]]);
      int p = 2;
      while(p*v[i]<=300000){
        if(m.count(p*v[i]) == 0){
          m[p*v[i]] = m[v[i]]+1;
        }else{
          if(m[p*v[i]] < m[v[i]]+1){
            m[p*v[i]] = m[v[i]]+1;
          }
        }
        p++;
      }
    }
  }

  cout << ret << endl;
  
  return 0;
}