#include "bits/stdc++.h"
#define _CRT_SECURE_NO_WARNINGS
#define rep(i,n) for(int i = 0;i < n;i++)
#define REP(i,n,k) for(int i = n;i < k;i++)
#define P(p) cout << (p) << endl;
#define sP(p) cout << setprecision(15) << fixed << p << endl;
#define vi vector<int>
#define mp(a,b) make_pair(a,b)
using namespace std;
typedef long long ll;
typedef unsigned long long ull;
int dx[] = { 1, -1 , 0 , 0};
int dy[] = { 0,  0,  1, -1};

int dp[1010101];
void solve() {
  int n,xmax = -1;
  cin >> n;
  fill(dp,dp+1010101,0);
  rep(i,n){
    int a;
    cin >> a;
    dp[a] = 1;
    xmax = max(xmax,a);
  }
  rep(i,xmax){
    if(dp[i] >= 1){
      for(int j = i*2;j <= xmax;j += i){
	if(dp[j] >= 1){
	  dp[j] = max(dp[j],dp[i]+1);
	}
      }
    }
  }
  int ans = -1;
  rep(i,xmax+1){
    ans = max(ans,dp[i]);
  }
  P(ans);
}

int main() {
	solve();
	return 0;
}