#include <bits/stdc++.h>

using namespace std;

int a[100005], dp[100005];

int main(){
  int n;
  cin >> n;
  for(int i = 1; i <= n; i++){
    cin >> a[i];
  }
  int maxx = INT_MIN;
  for(int i = 1; i <= n; i++){
    for(int j = 1; j * j <= a[i]; j++){
      if(a[i] % j == 0){
        if(j * j != a[i]){
          dp[a[i]] = max({dp[a[i]], dp[j] + 1, dp[a[i] / j] + 1});
        }
        else{
          dp[a[i]] = max(dp[a[i]], dp[j] + 1);
        }
      }
    }
    maxx = max(maxx, dp[a[i]]);
  }
  cout << maxx << '\n';
  return 0;
}