#include <vector>
#include <list>
#include <map>
#include <set>
#include <deque>
#include <stack>
#include <bitset>
#include <algorithm>
#include <functional>
#include <numeric>
#include <utility>
#include <sstream>
#include <iostream>
#include <iomanip>
#include <cstdio>
#include <cmath>
#include <cstdlib>
#include <cctype>
#include <string>
#include <cstring>
#include <ctime>
#include <queue>

using namespace std;
using ull = unsigned long long;
using ll = long long;
using lli = long long int;
using ld = long double;
using pa = pair<int,int>;
#define SORT(v, n) sort(v, v+n);
#define VSORT(v) sort(v.begin(), v.end());
#define GRESORT(v) sort(v.begin(),v.end(),greater<ll>())
#define REVERSE(v) reverse(v.begin(),v.end())
#define overlap(v) v.erase(unique(v.begin(),v.end()),v.end())
#define debug(x) cout << #x << ": " << x << endl
#define FOR(i,a,b) for(ll i = (a); i < (b); i++)
#define rep(i,n) FOR(i,0,n)
#define RFOR(i,a,b) for(ll i = (b-1); i >= a; i--)
#define rrep(i,n) RFOR(i,0,n)
#define INF 999999999
#define mins(a,b) a = min(a,b);
#define maxs(a,b) a = max(a,b);

//4近傍
//ll dy[]={0, 0, 1, -1};
//ll dx[]={1, -1, 0, 0};

//8近傍
//ll dy[]={0,0,1,-1,1,1,-1,-1};
//ll dx[]={1,-1,0,0,1,-1,1,-1};

ll mod = 1000000007;
ll n;
vector<ll> a(n);
vector<ll> dp(1000010);

// 約数を全部求める
vector<ll> divisor(ll n){
    vector<ll> res;
    for(ll i = 1; i*i <= n; i++){
        if(n % i == 0){
            res.push_back(i);
            if(i * i != n){
                res.push_back(n / i);
            }
        }
    }
    VSORT(res);
    return res;
}

void solve(){
    cin >> n;
    a.resize(n);

    rep(i,n) cin >> a[i];
    VSORT(a);

    rep(i,n){
        dp[a[i]] = 1;
        auto v = divisor(a[i]);
        for(auto j : v){
            if(a[i] != j) dp[a[i]] = max(dp[a[i]],dp[j] + 1);
        }
    }
    cout << *max_element(dp.begin(),dp.end()) << endl;
}

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

    solve();

    return 0;
}