#include<bits/stdc++.h>
#define REP(i,n) for(int i=0,i##_len=int(n);i<i##_len;++i)
#define rep(i,a,b) for(int i=int(a);i<int(b);++i)
#define All(x) (x).begin(),(x).end()
#define rAll(x) (x).rbegin(),(x).rend()
using namespace std;
using ll = long long;

int main(){
    int n;cin>>n;
    int dp[100001] = {};
    REP(i, n) {
        int a;cin>>a;
        int mx = 0;
        for(int m=1; m <= sqrt(a) + 1;m++){
            if(a%m==0) {
                mx = max(mx, dp[m]);
                mx = max(mx, dp[a/m]);
            }
        }
        dp[a] = mx + 1;
    }
    cout << *std::max_element(dp, dp+100001) << endl;
}