from collections import Counter

# Fruit sold per day
sales_day1 = Counter(apple=4, orange=9, banana=4)
sales_day2 = Counter(apple=10, orange=8, banana=6)

# Total sales
print(sales_day1 + sales_day2)


# Sales increment
print(sales_day2 - sales_day1)


# Minimum sales
print(sales_day1 & sales_day2)


# Maximum sales
print(sales_day1 | sales_day2)