import sys



stdin = sys.stdin

 

ri = lambda: int(rs())

rl = lambda: list(map(int, stdin.readline().split()))

rs = lambda: stdin.readline().rstrip()  # ignore trailing spaces



a, b, c = rl()

answer = a + b + c

print(('bust' if answer >= 22 else 'win'))





import sys



sr = lambda: sys.stdin.readline().rstrip()

ir = lambda: int(sr())

lr = lambda: list(map(int, sr().split()))



total = sum(lr())

print(('bust' if total >= 22 else 'win'))

# 44
import sys

stdin = sys.stdin
ri = lambda: int(rs())
rl = lambda: list(map(int, stdin.readline().split()))
rs = lambda: stdin.readline().rstrip()  # ignore trailing spaces
a, b, c = rl()
answer = a + b + c
print(("bust" if answer >= 22 else "win"))

import sys

sr = lambda: sys.stdin.readline().rstrip()
ir = lambda: int(sr())
lr = lambda: list(map(int, sr().split()))
total = sum(lr())
print(("bust" if total >= 22 else "win"))
# 44

-stdin = sys.stdin -ri = lambda: int(rs()) -rl = lambda: list(map(int, stdin.readline().split())) -rs = lambda: stdin.readline().rstrip()  # ignore trailing spaces -a, b, c = rl() -answer = a + b + c -print(("bust" if answer >= 22 else "win")) +sr = lambda: sys.stdin.readline().rstrip() +ir = lambda: int(sr()) +lr = lambda: list(map(int, sr().split())) +total = sum(lr()) +print(("bust" if total >= 22 else "win")) +# 44