#include <iostream>
#include <algorithm>
#include <string>
#include <vector>
#include <cmath>
#include <map>
#include <queue>
#include <iomanip>
#include <set>
#include <tuple>
#define mkp make_pair
#define mkt make_tuple
#define rep(i,n) for(int i = 0; i < (n); ++i)
using namespace std;
typedef long long ll;
const ll MOD=1e9+7;

int dp[300030];

int main(){
  int N;
  cin>>N;
  vector<ll> A(N);
  rep(i,N) cin>>A[i];

  for(int i=0;i<N;i++){
    ll val=A[i];
    for(ll j=1;j*j<=val;j++){
      if(val%j!=0) continue;
      if(j!=val) dp[A[i]]=max(dp[A[i]],dp[j]+1);
      if(val/j!=val) dp[A[i]]=max(dp[A[i]],dp[val/j]+1);
    }
    dp[A[i]]=max(dp[A[i]],1);
  }

  int ans=1;
  for(int i=1;i<=300010;i++) ans=max(ans,dp[i]);
  cout<<ans<<endl;

  return 0;
}