#pragma GCC target("avx")
#pragma GCC optimize("O3")
#pragma GCC optimize("unroll-loops")

#include <bits/stdc++.h>
using namespace std;

#define rep(i,n) for(int i = 0; i < (int)n; i++)
#define FOR(n) for(int i = 0; i < (int)n; i++)
#define repi(i,a,b) for(int i = (int)a; i < (int)b; i++)
#define pb push_back
#define all(x) x.begin(),x.end()
//#define mp make_pair
#define vi vector<int>
#define vvi vector<vi>
#define vll vector<ll>
#define vvll vector<vll>
#define vs vector<string>
#define vvs vector<vs>
#define vc vector<char>
#define vvc vector<vc>
#define pii pair<int,int>
#define pllll pair<ll,ll>
#define vpii vector<pair<int,int>>
#define vpllll vector<pair<ll,ll>>
#define vpis vector<pair<int,string>>
#define vplls vector<pair<ll, string>>
#define vpsi vector<pair<string, int>>
#define vpsll vector<pair<string, ll>>

template<typename T>
void chmax(T &a, const T &b) {a = (a > b? a : b);}
template<typename T>
void chmin(T &a, const T &b) {a = (a < b? a : b);}

using ll = long long;
using ld = long double;
using ull = unsigned long long;

const ll INF = numeric_limits<long long>::max() / 2;
const ld pi = 3.1415926535897932384626433832795028;
const ll mod = 998244353;
int dx[] = {-1, 0, 1, 0, -1, -1, 1, 1};
int dy[] = {0, -1, 0, 1, -1, 1, -1, 1};

#define int long long

vector<int> quotients(const int n) {
    vector<int> ret;

    for(int i = 1; i * i <= n; i++) {
        if(n%i != 0) continue;
        ret.push_back(i);
        if(i * i  != n) ret.push_back(n / i);
    }

    sort(all(ret));
    return ret;
}

void solve() {
    const int MAXN = 100100;
    int n;
    cin >> n;
    vi a(n);
    FOR(n) cin >> a[i];
    // sort(all(a));

    vi dp(MAXN, -1);
    for(auto e : a) {
        int mx = 1;
        for(auto f : quotients(e)) if(dp[f] != -1) {
            chmax(mx, dp[f] + 1);
        }
        chmax(dp[e], mx);

        // rep(i, MAXN) if(dp[i] != -1) cout << i << "->" << dp[i] << endl;
        // cout << "\n";
    }

    cout << *max_element(all(dp)) << endl;
}

signed main() {
    cin.tie(nullptr);
    ios::sync_with_stdio(false);
    solve();
    return 0;
}