package HackerRank;

import java.util.*;


class Student{}
class Rockstar{   }
class Hacker{}


public class FiftyFive {
	
   static String count(ArrayList mylist){
      int a = 0,b = 0,c = 0;
      for(int i = 0; i < mylist.size(); i++){
         Object element=mylist.get(i);
         if (element instanceof Student)
         a++;
         if (element instanceof Rockstar)
         b++;
         if (element instanceof Hacker)
         c++;
      }
      String ret = Integer.toString(a)+" "+ Integer.toString(b)+" "+ Integer.toString(c);
      return ret;
   }

   public static void main(String []args){
      ArrayList mylist = new ArrayList();
      Scanner sc = new Scanner(System.in);
      int t = sc.nextInt();
      for(int i=0; i