题解 | 定制显示器

def display_birthday_message():
    name = input().strip()
    age = input().strip()

    try:
        n = int(age)
        if n % 100 in (11,12,13):
            suffix = "th"
        else:
            last_digit = n % 10
            if last_digit == 1:
                suffix = "st"
            elif last_digit == 2:
                suffix = "nd"
            elif last_digit == 3:
                suffix = "rd"
            else:
                suffix = "th"
        ordinal_age = f"{n}{suffix}"
    except ValueError:
        ordinal_age = f"{age}th"

    print(f"Happy {ordinal_age} birthday to {name}!")

display_birthday_message()