source_code: import java.util.Scanner;
  
  
  public class Main {
      public static void main(String[] args) {
          Scanner in = new Scanner(System.in);
          int n = in.nextInt();
          int[] a = new int[n];
          for (int i = 0; i < n; i++) {
              a[i] = in.nextInt();
          }
          int min;
          int count = 0;
          int c = 0;
          while (count != n) {
              min = 1000;
              for (int i = 0; i < n; i++) {
                  if (a[i] < min) {
                      min = a[i];
                  }
              }
              for (int i = 0; i < n; i++) {
                  if (a[i] != 1000 && a[i] % min == 0) {
                      count++;
                      a[i] = 1000;
                  }
              }
              c++;
          }
          System.out.println(c);
      }
  }