02. Report System

required_money = int(input())
earned_money = 0
product_counter = 0
cs_total_money = 0
cs_counter = 0
cc_total_money = 0
cc_counter = 0

line = input()
while line != "End" and required_money >= earned_money:
    product_price = int(line)
    product_counter += 1
    if product_counter % 2 == 0:
        if product_price < 10:
            print("Error in transaction!")
        else:
            cc_total_money += product_price
            cc_counter += 1
            earned_money += product_price
            print("Product sold!")
    else:
        if product_price > 100:
            print("Error in transaction!")
        else:
            cs_total_money += product_price
            cs_counter += 1
            earned_money += product_price
            print("Product sold!")
    if earned_money >= required_money:
        break
    line = input()

if earned_money >= required_money:
    print(f"Average CS: {cs_total_money / cs_counter:.2f}")
    print(f"Average CC: {cc_total_money / cc_counter:.2f}")
else:
    print(f"Failed to collect required money for charity.")