#include <cstdio>
#include <vector>
#include <algorithm>
#define repeat(i,n) for (int i = 0; (i) < (n); ++(i))
#define whole(f,x,...) ([&](decltype((x)) y) { return (f)(begin(y), end(y), ## __VA_ARGS__); })(x)
using namespace std;
template <class T> void setmax(T & a, T const & b) { if (a < b) a = b; }
int main() {
    // input
    int n; scanf("%d", &n);
    vector<int> xs(n); repeat (i,n) scanf("%d", &xs[i]);
    // compute
    int l = *whole(max_element, xs);
    vector<bool> exists(l+1);
    for (int x : xs) exists[x] = true;
    vector<int> dp(l+1);
    whole(sort, xs);
    whole(reverse, xs);
    int ans = 0;
    for (int x : xs) {
        for (int y = x; y < l+1; y += x) {
            if (exists[y]) {
                setmax(dp[x], dp[y] + 1);
            }
        }
        setmax(ans, dp[x]);
    }
    // output
    printf("%d\n", ans);
    return 0;
}