#include <bits/stdc++.h>

using namespace std;

#define FOR(i,a,b) for(int i=(a);i<(b);i++)
#define REP(i,n) FOR(i,0,n)
#define ALL(v) (v).begin(),(v).end()

template<typename A, typename B> inline bool chmax(A &a, B b) { if (a<b) { a=b; return 1; } return 0; }
template<typename A, typename B> inline bool chmin(A &a, B b) { if (a>b) { a=b; return 1; } return 0; }

typedef long long ll;
typedef pair<int, int> pii;
typedef pair<ll, ll> pll;
typedef pair<int, pii> P;

const ll INF = 1ll<<29;
const ll MOD = 1000000007;
const double EPS  = 1e-10;

int dp[1123456];
int n;
int x[112345];

vector<ll> findDivisor(ll n) {
	vector<ll> divisor;
	for (ll i = 1; i * i <= n; i++) {
		if (n % i == 0) {
			divisor.push_back(i);
			if (i * i != n) divisor.push_back(n / i);
		}
	}
	return divisor;
}

int main() {
	cin >> n;
	REP(i, n) scanf("%d", x + i);
	sort(x, x + n);
	
	int ans = 0;
	REP(i, n) {
		vector<ll> div = findDivisor(x[i]);
		
		REP(j, div.size()) chmax(dp[x[i]], dp[x[i] / div[j]] + 1);
		chmax(ans, dp[x[i]]);
	}
	
	cout << ans << endl;
	
	return 0;
}