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from math import ceil
count_days = int(input())
count_km_first_day = float(input())
check_count_days = count_days
total_km = count_km_first_day
total = count_km_first_day
while check_count_days:
    percent_up = int(input())
    percent = percent_up / 100
    total_km = total_km + total_km * percent
    total += total_km
    # print(total_km)
    # print(total)

    check_count_days -= 1

#total = round(ceil(total))
diff = abs(total - 1000)
diff_ceil = ceil(diff)
if total >= 1000:
    print(f"You've done a great job running {diff_ceil} more kilometers!")
elif total < 1000:
    print(f"Sorry Mrs. Ivanova, you need to run {diff_ceil} more kilometers")