public class MyClass {
    public static void main(String args[]) {
        java.util.Scanner scanner = new java.util.Scanner(System.in);
        int energy = Integer.valueOf(scanner.nextLine());
        String nextCommand = null;
        int battlesWon = 0;
        int distance = 0;
        while(true) {
            nextCommand = scanner.nextLine();
            if (nextCommand.equals("End of battle")) {
                System.out.printf("Won battles: %d. Energy left: %d", battlesWon, energy);
                break;
            } else {
                distance = Integer.valueOf(nextCommand);
                if (energy >= distance) {
                    energy -= distance;
                    battlesWon++;
                    if (battlesWon % 3 == 0) {
                        energy += battlesWon;
                    }
                } else {
                    System.out.printf("Not enough energy! Game ends with %d won battles and %d energy", battlesWon, energy);
                    break;
                }
            }
        }
    }
}