import java.io.BufferedReader;
import java.io.Closeable;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.util.Arrays;
import java.util.LinkedList;
import java.util.Scanner;
import java.util.StringTokenizer;

public class Main {
	
	public static void main(String[] args) throws IOException {
		Scanner sc = new Scanner(System.in);
		
		final int N = sc.nextInt();
		int[] array = sc.nextIntArray(N);
		Arrays.sort(array);
		
		final int max = Arrays.stream(array).max().getAsInt();
		int[] DP = new int[max + 1];
		
		for(int i = 0; i < N; i++){
			DP[array[i]] = 1;
		}
		
		// ナイーブな素数篩っぽくやると N * sqrt(N) くらい計算量が落ちる
		for(int i = 0; i < N; i++){
			final int value = array[i];
			
			for(int j = value * 2; j <= max; j += value){
				DP[j] = Math.max(DP[j], DP[value] + 1);
			}
		}
		
		int answer = 0;
		for(int i = 0; i < N; i++){
			answer = Math.max(answer, DP[array[i]]);
		}
		
		//System.out.println(Arrays.toString(DP));
		//System.out.println(Arrays.toString(array));
		
		System.out.println(answer);
	}
	
	public static class Scanner implements Closeable {
		private BufferedReader br;
		private StringTokenizer tok;

		public Scanner(InputStream is) throws IOException {
			br = new BufferedReader(new InputStreamReader(is));
		}

		private void getLine() throws IOException {
			while (!hasNext()) {
				tok = new StringTokenizer(br.readLine());
			}
		}

		private boolean hasNext() {
			return tok != null && tok.hasMoreTokens();
		}

		public String next() throws IOException {
			getLine();
			return tok.nextToken();
		}

		public int nextInt() throws IOException {
			return Integer.parseInt(next());
		}

		public long nextLong() throws IOException {
			return Long.parseLong(next());
		}

		public double nextDouble() throws IOException {
			return Double.parseDouble(next());
		}

		public int[] nextIntArray(int n) throws IOException {
			final int[] ret = new int[n];
			for (int i = 0; i < n; i++) {
				ret[i] = this.nextInt();
			}
			return ret;
		}

		public long[] nextLongArray(int n) throws IOException {
			final long[] ret = new long[n];
			for (int i = 0; i < n; i++) {
				ret[i] = this.nextLong();
			}
			return ret;
		}

		public void close() throws IOException {
			br.close();
		}
	}
}