public class Sisestus2{
   public static void main(String[] a){
      if(a.length!=1){
         System.out.println("Kasuta kujul: java Sisestus2 15");
         System.out.println("(15 asemele sobiv vanus)");
         System.exit(1); //Katkestab programmi töö
      }
      int vanus=-1;
      try{
         vanus=Integer.parseInt(a[0]);
      } catch(Exception ex){
         System.out.println(a[0]+ " pole arv.");
         System.exit(1);
      }
      if(vanus<7){
         System.out.println("Tasuta");
      } else {
         System.out.println("Osta pilet");
         if(vanus<14){
           System.out.println("Lapsepilet");
         } else {
           System.out.println("Tavapilet");         
         }
      }
   }
}