MAX_CHIPS = 21
name1_points = 0
name2_points = 0


while True:
    name1 = input("What is your name P1? ")
    if name1.isalpha():
        print("Hello", name1)
        break
    else:
        print("That is not your name")


while True:
    name2 = input("What is your name P2? ")
    if name2.isalpha():
        print("Hello", name2)
        break
    else:
        print("That ain't your name")


while True:
    try:
        num_rounds = int(input("How many rounds do you want to play (between 1-5): "))
        if 1 <= num_rounds <= 5:
            break
        else:
            print("Choose between 1-5")
    except ValueError:
        print("Just Choose a number between 1-5")


for _ in range(num_rounds):
    chips_left = MAX_CHIPS


    while chips_left > 0:
        print(chips_left, "chips left.")
       
        # Player 1's turn
        while True:
            chips_taken = int(input(f"{name1}, how many chips would you like to take (1-3)? "))
            if 1 <= chips_taken <= 3 and chips_taken <= chips_left:
                break
            else:
                print("Invalid input. Please choose between 1-3 and no more than the remaining chips.")
        chips_left -= chips_taken
        print(f"{name1} took {chips_taken} chips. {chips_left} chips left.")


        if chips_left == 0:
            name1_points += 1
            print(f"One point for {name1}!")
            break
       
        # Player 2's turn
        while True:
            chips_taken = int(input(f"{name2}, how many chips would you like to take (1-3)? "))
            if 1 <= chips_taken <= 3 and chips_taken <= chips_left:
                break
            else:
                print("Invalid input. Please choose between 1-3 and no more than the remaining chips.")
        chips_left -= chips_taken
        print(f"{name2} took {chips_taken} chips. {chips_left} chips left.")


        if chips_left == 0:
            name2_points += 1
            print(f"One point for {name2}!")
            break


print("Game Finished!")


# Determine the winner
if name1_points > name2_points:
    print(f"{name1} won with {name1_points} points!")
elif name2_points > name1_points:
    print(f"{name2} won with {name2_points} points!")
else:
    print("It's a draw!")