#define _USE_MATH_DEFINES
#include <cstdio>
#include <iostream>
#include <sstream>
#include <fstream>
#include <iomanip>
#include <algorithm>
#include <cmath>
#include <complex>
#include <string>
#include <vector>
#include <list>
#include <queue>
#include <stack>
#include <set>
#include <map>
#include <bitset>
#include <numeric>
#include <limits>
#include <climits>
#include <cfloat>
#include <functional>
#include <iterator>
using namespace std;

const int MAX = 1000000;

int main()
{
    int n;
    cin >> n;

    vector<bool> check(MAX + 1, false);
    for(int i=0; i<n; ++i){
        int x;
        cin >> x;
        check[x] = true;
    }

    vector<int> dp(MAX + 1, 0);
    for(int i=1; i<=MAX; ++i){
        if(!check[i])
            continue;

        dp[i] = max(dp[i], 1);
        for(int j=2; i*j<=MAX; ++j){
            if(check[i*j])
                dp[i*j] = max(dp[i*j], dp[i] + 1);
        }
    }
    cout << *max_element(dp.begin(), dp.end()) << endl;

    return 0;
}