#include <bits/stdc++.h>
using namespace std;
using i64 = int64_t;
using vi = vector<i64>;
using vvi = vector<vi>;

int main() {
    int n;
    cin >> n;
    vi as(n), rev(1010101, -1);
    for (int i = 0; i < n; i++) {
        cin >> as[i];
    }
    sort(as.begin(), as.end());
    for (int i = 0; i < n; i++) {
        rev[as[i]] = i;
    }
    vi dp(n);
    dp[0] = 1;
    for (int i = 1; i < n; i++) {
        i64 t = 0;
        for (int j = 1; j * j <= as[i]; j++) {
            if (as[i] % j == 0) {
                if (rev[j] != -1) {
                    t = max(t, dp[rev[j]] + 1);
                }
                if (rev[as[i] / j] != -1) {
                    t = max(t, dp[rev[as[i] / j]] + 1);
                }
            }
        }
        dp[i] = t;
    }
    i64 ans = 1;
    for (int i = 1; i < n; i++) {
        // cout << dp[i] << endl;
        ans = max(ans, dp[i]);
    }
    cout << ans << endl;
}