import java.io.*;
import java.util.*;

public class Main {
    public static void main(String[] args) throws Exception {
        Scanner sc = new Scanner();
        int n = sc.nextInt();
        TreeSet<Integer> values = new TreeSet<>();
        for (int i = 0; i < n; i++) {
            values.add(sc.nextInt());
        }
        int[] counts = new int[1000001];
        int max = 0;
        for (int x : values) {
            max = Math.max(max, counts[x]);
            for (int j = 2; j * x <= 1000000; j++) {
                counts[j * x] = Math.max(counts[j * x], counts[x] + 1);
            }
        }
        System.out.println(max + 1);
    }
}
class Scanner {
    BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
    StringTokenizer st = new StringTokenizer("");
    StringBuilder sb = new StringBuilder();
    
    public Scanner() throws Exception {
        
    }
    
    public int nextInt() throws Exception {
        return Integer.parseInt(next());
    }
    
    public long nextLong() throws Exception {
        return Long.parseLong(next());
    }
    
    public double nextDouble() throws Exception {
        return Double.parseDouble(next());
    }
    
    public String next() throws Exception {
        while (!st.hasMoreTokens()) {
            st = new StringTokenizer(br.readLine());
        }
        return st.nextToken();
    }
    
}