counter_strike

#https://judge.softuni.org/Contests/Practice/Index/2305#0

won_battles = 0
energy = int(input())
not_energy = False

while True:
    command = input()
    if command == "End of battle":
        break

    distance = int(command)
    if energy - distance >= 0:
        energy -= distance
        won_battles += 1
        if won_battles % 3 == 0:
            energy += won_battles
    else:
        not_energy = True
        print(f"Not enough energy! Game ends with {won_battles} won battles and {energy} energy")
        break

if not not_energy:
    print(f"Won battles: {won_battles}. Energy left: {energy}")


##
# start_energy = int(input())
# energy = start_energy
# message = ""
# won_count = 0
#
# while True:
#     command = input()
#
#     if command == "End of battle":
#         message = f"Won battles: {won_count}. Energy left: {energy}"
#         break
#
#     energy_to_down = int(command)
#
#     if energy - energy_to_down >= 0:
#         won_count += 1
#         energy -= energy_to_down
#         if won_count % 3 == 0:
#             energy += won_count
#     else:
#         message = f"Not enough energy! Game ends with {won_count} won battles and {energy} energy"
#         break
#
# print(message)