#include <bits/stdc++.h>
using namespace std;
 
#define rep(i,a,b) for(int i=a;i<b;i++)
#define int long long
const int inf = 100100100100100;

signed main(){
    std::ios::sync_with_stdio(false);
    std::cin.tie(0);

    int n; cin >> n;

    vector<int> arr;
    rep(i,0,n){
        int t;
        cin >> t;
        arr.push_back(t);
    }

    map<int,int> mp;
    rep(i,0,n){
        mp[arr[i]] = 1;
    }
    sort(arr.begin(),arr.end());
    for(auto e:arr){
        int i = 2;
        int t = mp[e];
        while(e*i < 1e6+1){
            if(mp.find(e*i) != mp.end()){
                mp[e*i] = max(mp[e*i], t+1);
            }
            i++;
        }
    }

    int m = 0;
    for(auto e:mp){
        m = max(m, e.second);
    }
    cout << m << endl;
}