#include <bits/stdc++.h>

using i64 = long long;

int main() {
    std::ios::sync_with_stdio(false);
    std::cin.tie(nullptr);
    
    int n;
    std::cin >> n;
    
    std::vector<int> a(n);
    for (int i = 0; i < n; i++) {
        std::cin >> a[i];
    }
    
    int m = *std::max_element(a.begin(), a.end());
    
    std::vector<std::vector<int>> div(m + 1);
    for (int i = 1; i <= m; i++) {
        for (int j = i; j <= m; j += i) {
            div[j].push_back(i);
        }
    }
    
    std::vector<int> f(m + 1);
    int ans = 0;
    for (int i = 0; i < n; i++) {
        int v = 0;
        for (auto x : div[a[i]]) {
            v = std::max(v, f[x] + 1);
        }
        f[a[i]] = v;
        ans = std::max(ans, v);
    }
    std::cout << ans << "\n";
    
    return 0;
}