import java.util.*;

public class Freq {
  private static final Integer ONE = new Integer(1);

  private static Integer incr(Integer i){
    return new Integer(i.intValue() + 1);
  }

  public static void main(String args[]) {
   Map m = new HashMap();
   // Initialize frequency table from command line
   for (int i=0; i<args.length; i++) {
       Integer freq = (Integer) m.get(args[i]);
       m.put(args[i], freq==null ? ONE : incr(freq));
     }
   System.out.println(m.size()+" distinct words detected:");
   System.out.println(m);
 }
}