m

from math import ceil
days = int(input())
kilometers = float(input())
daily_km = kilometers
total_km = kilometers
for each_day in range(1, days + 1):
    percent = int(input())
    daily_km += daily_km * percent / 100
    total_km += daily_km
if total_km >= 1000:
    print(f"You've done a great job running {ceil(total_km - 1000)} more kilometers!")
else:
    print(f"Sorry Mrs. Ivanova, you need to run {ceil(1000 - total_km)} more kilometers")