Counter-Strike

total_energy = int(input())
distance = input()
count_battles = 0


while distance != "End of battle":
    distance = int(distance)
    total_energy -= distance

    if total_energy < 0:
        print(f"Not enough energy! Game ends with {count_battles} won battles and {total_energy + distance} energy")
        break

    count_battles += 1
    if count_battles % 3 == 0:
        total_energy += count_battles

    distance = input()


else:
    print(f"Won battles: {count_battles}. Energy left: {total_energy}")