import java.util.*;

public class Main {
    static final int MOD = 1000000007;
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int n = sc.nextInt();
        ArrayList<HashSet<Integer>> list = new ArrayList<>();
        list.add(new HashSet<>());
        list.get(0).add(sc.nextInt());
        for (int i = 1; i < n; i++) {
            int x = sc.nextInt();
            boolean flag = false;
            for (int y : list.get(0)) {
                if (x % y == 0 && x > y) {
                    flag = true;
                    break;
                }
            }
            if (!flag) {
                list.get(0).add(x);
                continue;
            }
            int left = 0;
            int right = list.size();
            while (right - left > 1) {
                int m = (left + right) / 2;
                boolean exist = false;
                for (int y : list.get(m)) {
                    if (x % y == 0 && x > y) {
                        exist = true;
                        break;
                    }
                }
                if (exist) {
                    left = m;
                } else {
                    right = m;
                }
            }
            if (left == list.size() - 1) {
                list.add(new HashSet<>());
            }
            list.get(left + 1).add(x);
            
        }
        System.out.println(list.size());
    }
}