04. Food for Pets

days = int(input())
total_food = float(input())
dog_eaten_food = 0
cat_eaten_food = 0
reward = 0

for i in range(1, days + 1):
    dog_food = int(input())
    cat_food = int(input())
    if i % 3 == 0:
        reward += (dog_food + cat_food) * 0.1
    dog_eaten_food += dog_food
    cat_eaten_food += cat_food

total_eaten_food = dog_eaten_food + cat_eaten_food
print(f"Total eaten biscuits: {round(reward)}gr.")
print(f"{total_eaten_food / total_food * 100:.2f}% of the food has been eaten.")
print(f"{dog_eaten_food / total_eaten_food * 100:.2f}% eaten from the dog.")
print(f"{cat_eaten_food / total_eaten_food * 100:.2f}% eaten from the cat.")