def main():

    a, b, c = list(map(int, input().split()))

    if (a + b + c) >= 22:

        print("bust")

    else:

        print("win")

main()
n = list(map(int, input().split()))



if n[0]+n[1]+n[2] >= 22:

    print("bust")

else:

    print("win")
def main():
    a, b, c = list(map(int, input().split()))
    if (a + b + c) >= 22:
        print("bust")
    else:
        print("win")


main()

n = list(map(int, input().split()))
if n[0] + n[1] + n[2] >= 22:
    print("bust")
else:
    print("win")

-def main(): -    a, b, c = list(map(int, input().split())) -    if (a + b + c) >= 22: -        print("bust") -    else: -        print("win") - - -main() +n = list(map(int, input().split())) +if n[0] + n[1] + n[2] >= 22: +    print("bust") +else: +    print("win")