#include <bits/stdc++.h>
using namespace std;
#define rep(i, n) for (int i=0; i<n; i++)
#define pb push_back
#define int long long

int N;
int A[300010];
int dp[300010];
 
signed main() {
    cin.tie(0); ios::sync_with_stdio(false);
    cin >> N;
    rep(i, N) cin >> A[i];
    for (auto& Ai:A) {
        dp[Ai] = 1;
        if (Ai==1) continue;
        int i = 1;
        while (i*i<=Ai) {
            if (Ai%i==0) {
                if (i==1) dp[Ai] = max(dp[Ai], dp[i]+1);
                else dp[Ai] = max({dp[Ai], dp[i]+1, dp[Ai/i]+1});
            }
            i++;
        }
    }
    int ans = 0;
    rep(i, 300010) ans = max(ans, dp[i]);
    cout << ans << endl;
}