#include<bits/stdc++.h>
#define EM 1000000
using namespace std;
using LL = long long;
using P = pair<LL, LL>;
LL LINF = 1e18;
int INF = 1e9;
LL mod = 1e9+7;
using vint = vector<int>;
using vLL = vector<LL>;
using vvint = vector<vector<int>>;
using vvLL = vector<vector<LL>>;
template<class T> inline bool chmax(T& a, T b) { if (a < b) { a = b; return 1; } return 0; }
template<class T> inline bool chmin(T& a, T b) { if (a > b) { a = b; return 1; } return 0; }

int main(){
    int N;
    cin >> N;
    vector<int> x(N), cnt(1e6+1, 1);
    set<int>    xx;
    for(int i = 0;i < N;i++){
        cin >> x[i];
        xx.insert(x[i]);
    }
    sort(x.begin(), x.end());
    for(int i = 0;i < N;i++){
        for(int j = 2;j*x[i] <= 1e6;j++){
            auto itr = xx.find(j*x[i]);
            if(itr != xx.end()){
                cnt[*itr] = max(cnt[*itr], cnt[x[i]]+1);
            }
        }
    }
    int ans = 0;
    for(auto c : cnt)   ans = max(ans, c);
    cout << ans << endl;
}