import sys

read = sys.stdin.buffer.read

readline = sys.stdin.buffer.readline

readlines = sys.stdin.buffer.readlines

import numpy as np



A = [int(x) for x in readline().rstrip().split()]

if sum(A) >= 22:

    print("bust")

else:

    print("win")
A = [int(x) for x in input().split()]

total = sum(A)

if total <= 21:

    print("win")

else:

    print("bust")
import sys

read = sys.stdin.buffer.read
readline = sys.stdin.buffer.readline
readlines = sys.stdin.buffer.readlines
import numpy as np

A = [int(x) for x in readline().rstrip().split()]
if sum(A) >= 22:
    print("bust")
else:
    print("win")

A = [int(x) for x in input().split()]
total = sum(A)
if total <= 21:
    print("win")
else:
    print("bust")

-import sys - -read = sys.stdin.buffer.read -readline = sys.stdin.buffer.readline -readlines = sys.stdin.buffer.readlines -import numpy as np - -A = [int(x) for x in readline().rstrip().split()] -if sum(A) >= 22: +A = [int(x) for x in input().split()] +total = sum(A) +if total <= 21: +    print("win") +else: -else: -    print("win")