06. Cake

import java.util.Scanner;

public class Cake_06 {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        int widthCake = Integer.parseInt(scanner.nextLine());
        int lengthCake = Integer.parseInt(scanner.nextLine());

        int pieces = widthCake * lengthCake;

        //стоп: 1.команда == Stop 2.pieces <= 0
        while (pieces > 0) {
            String command = scanner.nextLine(); //"STOP" или число (бр. взети парчета)
            if(command.equals("STOP")) {
                break;
            } else {
                //"5" -> число
                int takenPieces = Integer.parseInt(command); //взети парчета
                pieces -= takenPieces;
            }
        }

        if(pieces >= 0){
            //има останали парчета
            System.out.printf("%d pieces are left.", pieces);
        } else {
            //няма останали парчета -> pieces < 0
            System.out.printf("No more cake left! You need %d pieces more.", Math.abs(pieces));
        }
    }
}