#include<iostream>
#include<algorithm>
#include<vector>

using namespace std;

#define NMAX 100000
#define aMAX 1000000

int x[NMAX];
int memo[aMAX+1];
int ai[NMAX][30];
int an[NMAX];

int search(int i){
	int maxn=0;
	if(memo[i]!=-1) return memo[i];
	if(an[i]==0){
		memo[i]=1;
		return 1;
	}
	for(int j=0;j<an[i];j++){
		maxn=max(maxn,search(ai[i][j]));
	}
	memo[i]=maxn+1;
	return maxn+1;
}

int main(){

	int N;
	int maxn=-1;

	cin>>N;
	for(int i=0;i<N;i++) cin>>x[i];
	for(int i=0;i<=aMAX;i++) memo[i]=-1;

	sort(x,x+N);

	for(int i=0;i<N;i++){
		if(x[i]*x[i]>aMAX) continue;
		for(int j=i+1;j<N;j++){
			if(x[j]%x[i]==0){
				ai[i][an[i]++]=j;
			}
		}

	}

	for(int i=0;i<N;i++){
		maxn=max(maxn,search(i));
	}

	cout<<maxn<<endl;
}