CounterStrike

import java.util.Scanner;

public class CounterStrike {
    public static void main(String[] args) {
        Scanner scan = new Scanner(System.in);

        int energy = Integer.parseInt(scan.nextLine());

        String command = scan.nextLine();
        boolean isWonBattle = true;

        int counter = 0;

        while (!command.equals("End of battle")) {

            int distance = Integer.parseInt(command);

            counter++;
            if (energy < distance) {
                isWonBattle = false;
                break;

            } else {

                if (counter % 3 == 0) {
                    energy -= distance;
                    energy = energy + counter;

                } else {

                    energy -= distance;
                }

            }

            command = scan.nextLine();
        }

        if (isWonBattle) {

            System.out.printf("Won battles: %d. Energy left: %d", counter, energy);
        } else {
            System.out.printf("Not enough energy! Game ends with %d won battles and %d energy", counter - 1, energy);
        }


    }
}