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

const int MAXA = 1000000;

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

    int N;
    cin >> N;

    vector<int> A(N);
    for (int &x : A) cin >> x;

    vector<int> best(MAXA + 1, 0);

    int ans = 0;

    for (int x : A) {

        int cur = 1;

        for (int d = 1; d * d <= x; d++) {
            if (x % d == 0) {

                cur = max(cur, best[d] + 1);

                if (d * d != x)
                    cur = max(cur, best[x / d] + 1);
            }
        }

        best[x] = max(best[x], cur);
        ans = max(ans, cur);
    }

    cout << ans;
}