#include <stdio.h>

int main () {
  int n = 0;
  int a[100000] = {};
  
  int res = 0;
  
  int ans = 0;
  int max[100000] = {};
  
  res = scanf("%d", &n);
  for (int i = 0; i < n; i++) {
    res = scanf("%d", a+i);
  }
  
  for (int i = 0; i < n; i++) {
    if (max[a[i]-1] > max[0]) {
      max[a[i]-1]++;
    } else {
      max[a[i]-1] = max[0]+1;
    }
    for (int p = 2; p*p <= a[i]; p++) {
      if (a[i]%p == 0) {
        if (max[a[i]-1] <= max[p-1]) {
          max[a[i]-1] = max[p-1]+1;
        }
        if (max[a[i]-1] <= max[a[i]/p-1]) {
          max[a[i]-1] = max[a[i]/p-1]+1;
        }
      }
    }
    if (max[a[i]-1] > ans) {
      ans = max[a[i]-1];
    }
  }
  
  printf("%d\n", ans);
  return 0;
}