#include<algorithm>
#include<complex>
#include<ctype.h>
#include<iomanip>
#include<iostream>
#include<fstream>
#include<map>
#include<math.h>
#include<numeric>
#include<queue>
#include<set>
#include<stack>
#include<stdio.h>
#include<string>
#include<string>
#include<vector>

using namespace std;
typedef long long ll;

#define FOR(i,a,b) for(ll i=(a);i<(b);++i)
#define ALL(v) (v).begin(), (v).end()
#define p(s) cout<<(s)<<endl
#define p2(s, t) cout << (s) << " " << (t) << endl
#define br() p("")
#define pn(s) cout << (#s) << " " << (s) << endl
#define p_yes() p("Yes")
#define p_no() p("No")

const ll mod = 1e9 + 7;
const ll inf = 1e18;

template < typename T >
void vprint(T &V){
	for(auto v : V){
    	cout << v << " ";
	}
	cout << endl;
}

set<ll> factorization(ll N){
    set<ll> se;
    for(int i=1; i*i<=N; i++){
        if(N%i==0){
            se.insert(i);
            se.insert(N/i);
        }
    }
    return se;
}

vector<ll> dp;

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

    // input
    ll N;
    cin >> N;

    vector<ll> A(N);
    FOR(i, 0, N){
        cin >> A.at(i);
    }
    sort(ALL(A));
    ll max_v = A.back();

    dp.resize(max_v + 1);

    for(ll a : A){
        dp[a] = 1;
    }

    for(ll a : A){
        auto se = factorization(a);
        for(ll v : se){
            if(v<a){
                dp[a] = max(dp[a], dp[v]+1);
            }
        }
    }

    ll answer = dp[1];
    FOR(i, 0, max_v+1){
        answer = max(answer, dp[i]);
    }

    p(answer);
    
    return 0;
}