#include<bits/stdc++.h>
#define rep(i,a,b) for(int i=int(a);i<int(b);++i)
using namespace std;
typedef long long ll;
int INF = (1LL << 30) - 1;
int MOD = 1e9+7;
main(){
    const int MAX_V = 1000000;
    int N;
    cin >> N;
    vector<int> V(N),cnt(MAX_V+1);
    rep(i,0,N){
        cin >> V[i];
        cnt[V[i]] = 1;
    }
    for(int i = MAX_V;i >= 1;i--){
        if(!cnt[i])continue;
        int maxi = 0;
        for(int j = i * 2;j <= MAX_V;j += i){
            maxi = max(maxi, cnt[j]);
        }
        cnt[i] = max(cnt[i], maxi + 1);
    }
    int maxi = 0;
    rep(i,1,MAX_V+1)maxi = max(maxi, cnt[i]);
    cout << maxi << endl;
}