class JSample13_1{
  public static void main(String args[]){
    char c;
    int num;

    num = 20;
    c = num >= 0 ? '��' : '��';
    System.out.print(num + "��");
    System.out.println(c);

    num = -4;
    c = num >= 0 ? '��' : '��';
    System.out.print(num + "��");
    System.out.println(c);
  }
}