# your code goes here
asia={"한국", "중국", "일본"}
asia.add("베트남")
asia.add("중국")
asia.remove("일본")
asia.update(["홍콩", "한국", "태국"])
print(asia)
IyB5b3VyIGNvZGUgZ29lcyBoZXJlCmFzaWE9eyLtlZzqta0iLCAi7KSR6rWtIiwgIuydvOuzuCJ9CmFzaWEuYWRkKCLrsqDtirjrgqgiKQphc2lhLmFkZCgi7KSR6rWtIikKYXNpYS5yZW1vdmUoIuydvOuzuCIpCmFzaWEudXBkYXRlKFsi7ZmN7L2pIiwgIu2VnOq1rSIsICLtg5zqta0iXSkKcHJpbnQoYXNpYSk=