#include<iostream>
#include<vector>
#include<algorithm>
#include<cstring>
#include<cassert>
#include<cmath>
#include<ctime>
#include<iomanip>
#include<numeric>
#include<stack>
#include<queue>
#include<map>
#include<unordered_map>
#include<set>
#include<unordered_set>
#include<bitset>
#include<random>
using namespace std;
struct Eratosthenes {
    vector<int> isp,minfactor,myprime,moebius;

    Eratosthenes (int n) : isp(n+1,1),minfactor(n+1,__INT_MAX__),moebius(n+1,1){

        isp[0] = isp[1] = 0;
        minfactor[0] = 0;minfactor[1] = 1;

        for(int p = 2;p <= n;p++){
            if(!isp[p]) continue;
            minfactor[p] = p;
            moebius[p] = -1;
            myprime.push_back(p);

            for(int q = 2*p;q <= n;q += p){
                isp[q] = false;

                if(!((q/p)%p)) moebius[q] = 0;
                else moebius[q] = -moebius[q];


                minfactor[q] = min(minfactor[q],p);
            }
        }
    }

    vector<pair<int,int>> prime_factorize(int n) {
        vector<pair<int,int>> res;
        while(n-1){

            int p = minfactor[n];
            int exp = 0;

            while(minfactor[n] == p){
                n /= p;
                exp ++;
            }

            res.push_back(make_pair(p,exp));
        }

        return res;
    }

    vector<int> divisors(int n){
        vector<int> res;
        res.push_back(1);

        auto pf = prime_factorize(n);

        for(auto [p,e]:pf){
            int s = (int)res.size();

            for(int i = 0;i < s;i++){
                int v = 1;
                for(int j = 0;j < e;j++){
                    v *= p;
                    res.push_back(res[i]*v);
                }
            }
        }

        return res;
    }
};
int N,X[1 << 17];
int dp[1 << 20];
void solve()
{
	cin >> N;
	for(int i = 0;i < N;i++) cin >> X[i];
	sort(X,X+N);
	Eratosthenes er(int(1e6));
	for(int i = 0;i < 1 << 20;i++) dp[i] = -(int)1e9;
	for(int i = 0;i < N;i++)
	{
		for(int d:er.divisors(X[i])) dp[X[i]] = max(dp[X[i]],dp[d]);
		if(dp[X[i]] == -(int)1e9) dp[X[i]] = 1;
		else dp[X[i]]++;
	}
	int ans = 0;
	for(int i = 0;i < 1 << 20;i++) ans = max(ans,dp[i]);
	cout << ans << endl;
}
int main()
{
	ios::sync_with_stdio(false);
	cin.tie(nullptr);
	int tt = 1;
	//cin >> tt;
	while(tt--) solve();
}