#include <bits/stdc++.h>
#define rep(i,n) for(int i = 0; i < (n); ++i)
#define srep(i,s,t) for (int i = s; i < t; ++i)
#define drep(i,n) for(int i = (n)-1; i >= 0; --i)
using namespace std;
typedef long long int ll;
typedef pair<int,int> P;
#define yn {puts("Yes");}else{puts("No");}
#define MAX_N 1000005
int f[MAX_N];

int d[MAX_N];
vector<int> G[200000];
int dfs(int x){
    if(d[x] != 0) return d[x];
    rep(i,G[x].size()){
        d[x] = max(d[x], dfs(G[x][i]));
    }
    d[x]++;
    return d[x];
}

int main() {
    int n;
    cin >> n;
    int x[n];
    rep(i,n) cin >> x[i];
    sort(x,x+n);
    
    rep(i,MAX_N) f[i] = -1;
    rep(i,n) f[x[i]] = i;
    rep(i,n){
        srep(j,2,10000000){
            if(x[i]*j >= MAX_N) break;
            if(f[x[i]*j] != -1){
                G[i].push_back(f[x[i]*j]);
            }
        }
    }
    int ans = 0;
    rep(i,n){
        ans = max(ans,dfs(i));
    }
    cout << ans << endl;
    return 0;
}