import socket


class Netcat:
    """ Python 'netcat like' module """

    def __init__(self, ip, port):
        self.buff = ""
        self.socket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
        self.socket.connect((ip, port))

    def read(self, length=1024):
        """ Read 1024 bytes off the socket """

        return self.socket.recv(length)

    def read_until(self, data):
        """ Read data into the buffer until we have data """

        while not data in self.buff:
            self.buff += self.socket.recv(1024)

        pos = self.buff.find(data)
        rval = self.buff[:pos + len(data)]
        self.buff = self.buff[pos + len(data):]

        return rval

    def write(self, data):
        self.socket.send(data)

    def close(self):
        self.socket.close()


x = Netcat("ppc.ctf.hackforces.com", 7094)

n = str(x.read())
print(n)
n = n[10:-14]
print(n)
c = 0
for i in n:
    if i != " ":
        c+=1
print(c)
x.write(c.to_bytes(8, byteorder='big'))
print(x.read())