first

import java.util.Scanner;

public class first {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        int energy = Integer.parseInt(scanner.nextLine());
        String command = scanner.nextLine();
        int countBattle = 0;

        while (!command.equals("End of battle")) {
            int n = Integer.parseInt(command);
            if (energy < n) {
                System.out.printf("Not enough energy! Game ends with %d won battles and %d energy", countBattle, energy);
                break;
            }
            countBattle++;
            if (countBattle % 3 == 0) {
                energy += countBattle;
            }
            energy -= n;

            command = scanner.nextLine();
        }
        if (command.equals("End of battle")) {
            System.out.printf("Won battles: %d. Energy left: %d", countBattle, energy);
        }
    }
}