#pragma comment (linker, "/STACK:526000000")
#define  _CRT_SECURE_NO_WARNINGS
#include "bits/stdc++.h"

using namespace std;
typedef string::const_iterator State;
#define eps 1e-11L
#define MAX_MOD 1000000007LL
#define GYAKU 500000004LL

#define MOD 998244353LL
#define seg_size 262144
#define pb push_back
#define mp make_pair
typedef long long ll;
#define REP(a,b) for(long long (a) = 0;(a) < (b);++(a))
#define ALL(x) (x).begin(),(x).end()
unsigned long xor128() {
    static unsigned long x = 123456789, y = 362436069, z = 521288629, w = 88675123;
    unsigned long t = (x ^ (x << 11));
    x = y; y = z; z = w;
    return (w = (w ^ (w >> 19)) ^ (t ^ (t >> 8)));
}
void init() {
    iostream::sync_with_stdio(false);
    cout << fixed << setprecision(100);
}
#define int ll
int dp[400000];
void solve(){
    int n;
    cin >> n;
    REP(i, n) {
        int a;
        cin >> a;
        if (a == 1) {
            dp[1] = 1;
            continue;
        }
        else {
            dp[a] = dp[1] + 1;
        }
        for (int q = 2; q * q <= a; ++q) {
            if (a % q == 0) {
                dp[a] = max({ dp[a],dp[q] + 1,dp[a / q] + 1 });
            }
        }
    }
    ll ans = 0;
    REP(i, 400000) {
        ans = max(ans, dp[i]);
    }
    cout << ans << endl;

}
#undef int
int main() {
    init();
    solve();
}