这份日志里各有几条

运行下面这段程序，填写它打印出来的结果。

LOG = [
    ("19:15:44", "INFO",  "starting pid=8"),
    ("19:15:45", "INFO",  "loading config"),
    ("19:15:45", "WARN",  "cache dir missing, will create"),
    ("19:15:45", "INFO",  "cache dir ready"),
    ("19:15:46", "ERROR", "db connect failed: no such file"),
    ("19:15:46", "ERROR", "warm-up skipped"),
    ("19:15:46", "ERROR", "request handler not ready"),
    ("19:15:47", "ERROR", "request handler not ready"),
    ("19:15:47", "ERROR", "request handler not ready"),
    ("19:15:48", "INFO",  "retrying db"),
    ("19:15:48", "ERROR", "db connect failed: no such file"),
    ("19:15:49", "ERROR", "giving up"),
    ("19:15:49", "INFO",  "shutting down"),
    ("19:15:49", "INFO",  "stopped"),
]

lv = [r[1] for r in LOG]
print(str(len(LOG)) + "/" + str(lv.count("ERROR")) + "/"
      + str(lv.count("INFO")) + "/" + str(lv.count("WARN")))