#include <bits/stdc++.h>
#define rep(i, a, n) for(int i = a; i < n; i++)
#define repp(i, n) rep(i, 0, n)
#define repb(i, a, b) for(int i = a; i >= b; i--)
#define all(a) a.begin(), a.end()
#define int long long
using namespace std;
typedef pair<int, int> P;

vector<int> divisor(int n){
	vector<int> res;
	for(int i=1;i*i<=n;i++){
		if(n%i==0){
			res.push_back(i);
			if(i!=n/i) res.push_back(n/i);
		}
	}
	return res;
}

signed main(){
    int n;
    cin >> n;
    vector<int> x(n);
    rep(i, 0, n) cin >> x[i];
    sort(all(x));
    vector<int> dp(1000001);

    for(auto i: x){
        dp[i] = 1;
        auto v = divisor(i);
        for(auto j: v){
            if(j == i) continue;
            dp[i] = max(dp[i], dp[j] + 1);
        }
    }

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