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

//template
#define rep(i,a,b) for(int i=(a);i<(b);i++)
#define rrep(i,a,b) for(int i=(a);i>(b);i--)
#define ALL(v) (v).begin(),(v).end()
typedef long long int ll;
const int inf = 0x3fffffff; const ll INF = 0x1fffffffffffffff; const double eps=1e-12;
void tostr(ll x,string& res){while(x)res+=('0'+(x%10)),x/=10; reverse(ALL(res)); return;}
template<class T> inline bool chmax(T& a,T b){ if(a<b){a=b;return 1;}return 0; }
template<class T> inline bool chmin(T& a,T b){ if(a>b){a=b;return 1;}return 0; }
//template end

vector<int> res(301000,0),g[301000];

int main(){
   rep(i,1,300001){
	   for(int j=2*i;j<=300000;j+=i)g[j].push_back(i);
   }
   int n; scanf("%d",&n);
   vector<int> a(n);
   rep(i,0,n)scanf("%d",&a[i]);
   rep(i,0,n){
	   if(a[i]==1)chmax(res[a[i]],1);
	   else{
		   for(int pre:g[a[i]]){
			   chmax(res[a[i]],res[pre]+1);
		   }
	   }
   }
   printf("%d\n",*max_element(ALL(res)));
   return 0;
}