#include <bits/stdc++.h>
#define MOD 1000000007

using namespace std;

int N;
int num[100001] = {0};
int dp[1000001] = {0};

vector<int> divisor(int n) {
    if (n == 1) return {};
    vector<int> res;
    for (int i = 1; i * i <= n; i++) {
        if (n % i == 0) {
            res.emplace_back(i);
            if (i != 1 && i != n / i) res.emplace_back(n / i);
        }
    }
    return res;
}

int main(void){
    
    cin >> N;
    
    int i;
    for(i = 0; i < N; ++i){
        cin >> num[i];
    }
    sort(num, num + N);
    
    for(auto i : num){
        dp[i] = 1;
        auto k = divisor(i);
        for(auto j : k) dp[i] = max(dp[i], dp[j] + 1);
    }
    
    int result = 0;
    for(i = 0; i < N; ++i) result = max(result, dp[num[i]]);
    
    cout << result << endl;
    
    return 0;
}