Tik Tok

a = [[0 for _ in range(3)]for i in range(2)]

len_a, count = 0, 0

for lists in a:
    for elenents_in_list in lists:
        len_a += 1

while count < len_a:

    print("Please  enter 3 numbers x, y and number with space and press enter")

    try:
        user_1 = list(map(int, input("user_1 enter x, y and number: ").split()))
        user_2 = list(map(int, input("user_2 enter x, y and number: ").split()))
        if a[user_1[0]][user_1[1]] == 0:
            a[user_1[0]][user_1[1]] = user_1[2]
            count += 1
            print(a)
        else:
            print(f"Try again another coord user1 - x: {user_1[0]} and y:{user_1[1]}, this coord already used")

        if a[user_2[0]][user_2[1]] == 0:
            a[user_2[0]][user_2[1]] = user_2[2]
            count += 1
            print(a)
        else:
            print(f"Try again another coord user2 - x: {user_2[0]} and y:{user_2[1]}, this coord already used")

    except IndexError:
        print("Try another index x: 0-2 and y: 0-2 ")
        continue
    print(count)