import java.io.*; import java.util.*; import java.util.function.*; import java.util.stream.*; public class Main { public static void main(String[] args) throws Exception { Scanner sc = new Scanner(); int n = sc.nextInt(); int[] levels = new int[100001]; while (n-- > 0) { int x = sc.nextInt(); int current = 0; for (int i = 1; i <= Math.sqrt(x); i++) { if (x % i == 0) { current = Math.max(current, levels[i]); current = Math.max(current, levels[x / i]); } } levels[x] = current + 1; } long ans = Arrays.stream(levels).max().orElse(0); System.out.println(ans); } } class Scanner { BufferedReader br; StringTokenizer st = new StringTokenizer(""); StringBuilder sb = new StringBuilder(); public Scanner() { try { br = new BufferedReader(new InputStreamReader(System.in)); } catch (Exception e) { } } public int nextInt() { return Integer.parseInt(next()); } public long nextLong() { return Long.parseLong(next()); } public double nextDouble() { return Double.parseDouble(next()); } public String next() { try { while (!st.hasMoreTokens()) { st = new StringTokenizer(br.readLine()); } } catch (Exception e) { e.printStackTrace(); } finally { return st.nextToken(); } } }