#include <iostream>
#include <cstdio>
#include <cstring>
#include <vector>
#include <deque>
#include <queue>
#include <array>
#include <set>
#include <map>
#include <cmath>
#include <complex>
#include <algorithm>
#include <numeric>
#include <utility>
#include <tuple>
#include <functional>
#include <bitset>
#include <cstdint>
#include <cassert>
#include <random>

using namespace std;
using i64 = int64_t;
using i32 = int32_t;
template<class T> T iabs(const T& x) { return max(x, -x); }

unsigned char b[300001];
int main() {
    int n;
    cin >> n;
    vector<int> a(n);
    for (int i = 0; i < n; ++i) {
        cin >> a[i];
    }
    for (int i = 0; i < n; ++i) {
        b[a[i]] = a[i] == 1 ? 1 : b[1] + 1;
        for (int x = 2; x * x <= a[i]; ++x) {
            if (a[i] % x == 0) {
                b[a[i]] = max(b[a[i]], (unsigned char)(b[x] + 1));
                b[a[i]] = max(b[a[i]], (unsigned char)(b[a[i] / x] + 1));
            }
        }
    }
    int ans = 0;
    for (int i = 1; i <= 300000; ++i) {
        ans = max(ans, int(b[i]));
    }
    cout << ans << endl;
    return 0;
}