#include <bits/stdc++.h>

using namespace std;

#define REP(i,n) for(int i=0; i<(int)(n); i++)

int main() {
  ios_base::sync_with_stdio(0);
  cin.tie(0);

  int n;
  cin >> n;
  vector<int> x(n);
  REP (i, n) cin >> x[i];
  sort(x.begin(), x.end());

  vector<int> dp(1000000+1);  
  int ret = 0;
  for (int a: x) {
    ret = max(ret, ++dp[a]);
    for (int b = 2 * a; b <= 1000000; b += a)
      dp[b] = max(dp[b], dp[a]);
  }

  cout << ret << endl;
  
  return 0;
}