#include <bits/stdc++.h>
#define rep(i,n) for(int i = 0; i < (n); ++i)
#define srep(i,s,t) for (int i = s; i < t; ++i)
#define drep(i,n) for(int i = (n)-1; i >= 0; --i)
using namespace std;
typedef long long int ll;
typedef pair<int,int> P;
#define yn {puts("Yes");}else{puts("No");}
#define MAX_N 200005

int main() {
    int n;
    cin >> n;
    int a[n];
    rep(i,n)cin >> a[i];

    int b[300005] = {};

    rep(i,n){
        if(a[i] == 1){
            b[a[i]] = 1;
            continue;
        }
        b[a[i]] = max(b[a[i]], b[1] + 1);
        srep(j,2,300005){
            if(j * j > a[i])break;
            if(a[i] % j == 0){
                b[a[i]] = max(b[a[i]], b[j] + 1);
                b[a[i]] = max(b[a[i]], b[a[i]/j] + 1);
            }
        }
    }

    int ans = 0;

    rep(i,300005)ans = max(ans, b[i]);

    cout << ans << endl;
    return 0;
}