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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def read_pid_stat(pid="self"):
 """ Returns system process stat information. :param pid: The process ID. :returns: The system stat information. :rtype: dict """

    with open("/proc/%s/stat" % (pid,), "rb") as f:
        stat = f.readline().split()
    return {
        "utime": int(stat[13]),
        "stime": int(stat[14]),
        "cutime": int(stat[15]),
        "cstime": int(stat[16]),
    }