Black Flag [python]

plunder_days = int(input())
daily_plunder = int(input())
expected_plunder = float(input())

add_daily_plunder = 0

for day in range(1, plunder_days + 1):
    add_daily_plunder += daily_plunder

    if day % 3 == 0:
        additional_plunder = daily_plunder * 0.5
        add_daily_plunder += additional_plunder
    if day % 5 == 0:
        lost_plunder = add_daily_plunder * 0.3
        add_daily_plunder -= lost_plunder

if add_daily_plunder >= expected_plunder:
    print(f"Ahoy! {add_daily_plunder:.2f} plunder gained.")
else:
    percentage = (add_daily_plunder / expected_plunder) * 100

    print(f"Collected only {percentage:.2f}% of the plunder.")