#include <iostream>
#include <string>
#include <vector>
#include <algorithm>
#include <atcoder/modint>
using namespace std;
using i32 = int;
using u32 = unsigned int;
using i64 = long long;
using u64 = unsigned long long;
#define rep(i,n) for(int i=0; i<(int)(n); i++)
const i64 INF = 1001001001001001001;

using Modint = atcoder::static_modint<1000000007>;

int main(){
    int N; cin >> N;
	vector<int> A(N); rep(i,N) cin >> A[i];
	int Z = *max_element(A.begin(), A.end());
	vector<vector<int>> nx(Z+1);
	for(int a=1; a<=Z; a++) for(int b=a; b<=Z; b+=a) nx[b].push_back(a);
	vector<int> dp(Z+1, 0);
	for(int a : A){
		int t = dp[a];
		for(int b : nx[a]) t = max(t, dp[b] + 1);
		dp[a] = t;
	}
	int ans = *max_element(dp.begin(), dp.end());
	cout << ans << endl;
    return 0;
}



struct ios_do_not_sync{
    ios_do_not_sync(){
        ios::sync_with_stdio(false);
        cin.tie(nullptr);
    }
} ios_do_not_sync_instance;