import java.util.*;

public class Main {
	public static void main (String[] args) {
		Scanner sc = new Scanner(System.in);
		int n = sc.nextInt();
		int[] arr = new int[n];
		for (int i = 0; i < n; i++) {
		    arr[i] = sc.nextInt();
		}
		Arrays.sort(arr);
		HashMap<Integer, Integer> map = new HashMap<>();
		int ans = 0;
		for (int i = 0; i < n; i++) {
		    int max = 0;
		    for (int j = 1; j <= Math.sqrt(arr[i]); j++) {
		        if (arr[i] % j == 0) {
		            if (map.containsKey(j)) {
		                max = Math.max(max, map.get(j));
		            }
		            if (map.containsKey(arr[i] / j)) {
		                max = Math.max(max, map.get(arr[i] / j));
		            }
		        }
		    }
		    map.put(arr[i], max + 1);
		    ans = Math.max(ans, max + 1);
		}
		System.out.println(ans);
	}
}