#include<bits/stdc++.h>
using namespace std;

const int MAXV = 100001;

int n, dp[MAXV], ans;

void C(int x) {
  for(int i = 1; i * i <= x; ++i) {
    if(x % i == 0) {
      dp[x] = max({dp[x], dp[i] + 1, dp[x / i] + 1});
    }
  }
}

int main() {
  ios::sync_with_stdio(false), cin.tie(0), cout.tie(0);
  cin >> n;
  for(int i = 1, x; i <= n; ++i) {
    cin >> x;
    C(x);
    ans = max(ans, dp[x]);
  }
  cout << ans;
  return 0;
}