#include<bits/stdc++.h>

using namespace std;

const int maxn = 1e5 + 5;

int n, ans, a[maxn], dp[maxn];

int main(){
  cin >> n;
  for(int i = 1; i <= n; i++){
    cin >> a[i];
  }
  for(int i = 1; i <= n; i++){
    for(long long j = 1; j * j <= a[i]; j++){
      if(a[i] % j == 0){
        dp[a[i]] = max({dp[a[i]], dp[j] + 1, dp[a[i] / j] + 1});
      }
    }
    ans = max(ans, dp[a[i]]);
  }
  cout << ans;
  return 0;
}