#include <bits/stdc++.h>

using namespace std;

const int MAXN = 1e5 + 10;

long long n, a[MAXN], dp[MAXN], ans;

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