Здравейте, 

Моля за помощ. Не мога да разбера какво пропускам. 

Условието на задачата:

As a young adventurer, you travel with your group worldwide, seeking for gold and glory. But you need to split the profit among your companions.

You will receive a group size. After that, you receive the days of the adventure.

Every day, you earn 50 coins, but you also spend 2 coins per companion for food.

Every 3rd (third) day, you organize a motivational party, spending 3 coins per companion for drinking water.

Every 5th (fifth) day, you slay a boss monster and gain 20 coins per companion. But if you have a motivational party the same day, you spend additional 2 coins per companion.

Every 10th (tenth) day at the start of the day, 2 (two) of your companions leave, but every 15th (fifteenth) day 5 (five) new companions are joined at the beginning of the day.

You should calculate how many coins gets each companion at the end of the adventure.

Input / Constraints

The input will consist of exactly 2 lines:

• group size – integer in the range [1…100]
• days – integer in the range [1…100]

Output

Print the following message: "{companions_count} companions received {coins} coins each."

Note: You cannot split a coin, so you should round down the coins to an integer number.

Моето решение:

group_size = int(input())
days = int(input())
coins = 0

for day in range (1, days + 1):
    is_both_days = False
    coins += 50-(group_size*2)
    if day % 10 == 0:
        group_size -= 2
    if day % 15 == 0:
        group_size += 5
    if day % 3 == 0:
        coins -= group_size * 3
        is_both_days = True
    if day % 5 == 0:
        coins += 20 * group_size
        if is_both_days:
            coins -= group_size * 2
coins_per_person = int(coins/group_size)
print(f"{group_size} companions received {coins_per_person} coins each.")