#include<bits/stdc++.h>
using namespace std;
#define rep(i,n) for(int i=0;i<(int)(n);i++)
#define pb push_back
#define mt make_tuple
#define ALL(a) (a).begin(),(a).end()
#define FST first
#define SEC second
#define DEB cerr<<"!"<<endl
#define SHOW(a,b) cerr<<(a)<<" "<<(b)<<endl
#define ll long long
#define vi vector<int>

const int INF = (INT_MAX/2);
const ll LLINF = (LLONG_MAX/2);
const double eps = 1e-8;
const ll DIV =1e9+7;
//const double PI = M_PI;
inline ll pow(ll x,ll n,ll m){ll r=1;while(n>0){if((n&1)==1)r=r*x%m;x=x*x%m;n>>=1;}return r%m;}
inline ll lcm(ll d1, ll d2){return d1 / __gcd(d1, d2) * d2;}
#define chmax(a,b) a=max(a,b)

/*Coding Space*/
int dp[300005];
int ans = 0;
int main(){
  fill_n(dp,300005,0);
  int n; cin >> n;
  vi A(n); rep(i,n) cin >> A[i];
  rep(j,n){
    for(int i = 1; i*i <= A[j]; ++i){
      if(A[j] % i == 0 && A[j]/i < A[j])  dp[A[j]] = max(dp[A[j]], dp[A[j]/i] + 1);
      else if(A[j] % i == 0)  dp[A[j]] = max(dp[A[j]], dp[i] + 1);

    }
    ans = max(ans, dp[A[j]]);
  }
  //rep(i,10) cout << dp[i] << endl;
  cout << ans << endl;
}