#include <bits/stdc++.h>
#define REP(i, x, y) for (ll i = x; i <= y; i++)
#define BIT(t) (1ll << t)
#define PER(i, y, x) for (ll i = y; i >= x; i--)
#define vll vector<ll>
#define vvll vector<vector<ll>>
#define pll pair<ll, ll>
#define SIZE(v) ll(v.size())
#define UNIQUE(v) v.erase(unique(v.begin(), v.end()), v.end());
using namespace std;
typedef long long ll;
//        ios::sync_with_stdio(false);
//        cin.tie(nullptr);

int main(){
        ll n;
        cin >> n;
        vll a(n+1);
        ll const MAX = 3e5 + 1;
        vll v(MAX, 0);
        REP(i,1,n){
                cin >> a[i];
        }
        REP(i,1,n){
                ll t = a[i];
                if(t == 1){
                        v[1] = 1;
                        continue;
                }
                v[t] = max(v[t], v[1] + 1);
                for(ll i = 2;i * i<=t;i++){
                        if(t % i == 0){
                                ll j = t / i;
                                v[t] = max({v[t], v[i] + 1, v[j] + 1});
                        }
                }
        }
        ll ans = 0;
        REP(i,1,MAX){
                ans = max(ans, v[i]);
        }
        cout << ans << endl;

}