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

int main() {
    int n;
    cin >> n;
    vector<int> a(n);
    for (int i = 0; i < n; i++) cin >> a.at(i);
    vector<vector<int>> d(300001);
    for (int i = 1; i <= 300000; i++) {
        for (int j = 1; j * j <= i; j++) {
            if (i % j) continue;
            d.at(i).push_back(j);
            d.at(i).push_back(i / j);
        }
    }
    vector<int> dp(300001);
    for (int i = 0; i < n; i++) {
        dp.at(a.at(i)) = max(dp.at(a.at(i)), 1);
        for (int x : d.at(a.at(i))) {
            if (x == a.at(i)) continue;
            dp.at(a.at(i)) = max(dp.at(a.at(i)), dp.at(x) + 1);
        }
    }
    cout << *max_element(dp.begin(), dp.end()) << endl;
}