#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;
    vector<int> A(N);
    REP(i, N) cin >> A[i];
    int MAX=*max_element(All(A));
    vector<int> dp(MAX+1);
    REP(i,N){
        if(A[i]>1) dp[A[i]]=max(dp[A[i]],dp[1]+1);
        else dp[1]=1;
        for(int j=2;j*j<=A[i];++j){
            if(A[i]%j==0){
                dp[A[i]]=max({dp[A[i]],dp[j]+1,dp[A[i]/j]+1});
            }
        }
    }
    // REP(i,MAX+1) cout<<i<<" "<<dp[i]<<endl;
    cout<<*max_element(All(dp))<<endl;
}