#include <bits/stdc++.h>
#define rep(i,n) for(int i=0;i<(int)(n);i++)
using namespace std;
using ll = long long ;
using P = pair<int,int> ;
using pll = pair<long long,long long>;
constexpr int INF = 1e9;
constexpr long long LINF = 1e17;
constexpr int MOD = 1000000007;
constexpr double PI = 3.14159265358979323846;
const int MX = 300005;

int dp[MX] = {1};

int main(){
    int n;
    cin >> n;
    vector<int> a(n);
    rep(i,n) cin >> a[i];
    rep(i,n){
        dp[a[i]] = max(dp[a[i]],dp[1]+1);
        for(int j=2;j*j<=a[i];j++){
            if(a[i]%j==0){
                dp[a[i]] = max(dp[a[i]],dp[j]+1);
                dp[a[i]] = max(dp[a[i]],dp[a[i]/j]+1);
            }
        }
    }
    int mx = 0;
    rep(i,MX) mx = max(mx,dp[i]);
    cout << mx << endl;

    return 0;
}