import java.io.*;
public class Person
{
  // max # of people in database.
    private final static int maxN = 100;
 
  // folks[0..n] are people in database.
  private static Person[] folks = 
    new Person[maxN];
  private static int n = 0;
 
  private String name;  // person's name.
  private boolean male; // person's maleness.
// Construct Person named s of maleness m.  
public Person(String s, boolean m)
  {
    name = s;
    male = m;
    if ( n >= maxN )
       System.out.println("Person: too many.");
    else {
       folks[n] = this;
       n++;
       }
  }
 
  // # of people in database.     
  public static int numberOfPeople()
  {
     return n;
  }
       
  // i-th Person in database.
  public static Person intToPerson(int i)
  {
    if (i < 0 || i >= n) return null;
    else return folks[i];
  }
       
  // string representation of a Person.
  public String toString()
  {
    String result;
    result = "name:"+ name + "; ";
    if (male)
      result = result + " sex:male;";
    else 
      result = result + " sex:female;";
    return result; 
  }
}