"都动过"和"真冲突"差几行

数两个数：两边都动过的行数，和其中真正冲突的行数。运行下面这段程序：

def classify(b, o, t):
    if o == t:
        return "same"
    if o == b:
        return "theirs"
    if t == b:
        return "ours"
    return "conflict"

base = ['HOST = "localhost"', 'PORT = 8000', 'DEBUG = False',
        'TIMEOUT = 30', 'RETRY = 1', 'LOG = "app.log"']
ours = ['HOST = "localhost"', 'PORT = 8080', 'DEBUG = True',
        'TIMEOUT = 60', 'RETRY = 1', 'LOG = "main.log"']
theirs = ['HOST = "0.0.0.0"', 'PORT = 9000', 'DEBUG = True',
          'TIMEOUT = 30', 'RETRY = 3', 'LOG = "sys.log"']
both = sum(1 for b, o, t in zip(base, ours, theirs)
           if o != b and t != b)
conf = sum(1 for b, o, t in zip(base, ours, theirs)
           if classify(b, o, t) == "conflict")
print(str(both) + "/" + str(conf))