Challenging Thursdays
=====================

This is a small programming contest judge for "Challenging Thursdays".

After building, the server program can be started as follows, taking
the address of open contests as its arguments:

  $ serv cont1 cont2 ... contN

Each contest is specified as a directory containing several pairs of
files, each of which specify a test case: the file XY, in which X and
Y are both digits, is the input and XYo is the expected output (such
as 00 and 00o).  Alternatively, instead of the expected output file,
a verifier program (named XYv) can verify the output and print a
score for the test.  The verifier program can read test case input
from a file named .i and submitted program's output from a file
named .o.

The server listens on TCP port 40 for incoming connections.  Each
incoming connection can make one of the following requests:

report CONT
	Print submission statistics for contest CONT.
register USERNAME PASSWORD
	Register a user with the given username and password.
submit USERNAME PASSWORD CONT LANG EOF
	Submit a program for contest CONT in language LANG.  This
	command should be followed by the contents of the program,
	followed by a line containing nothing but EOF.  LANG can
	be c for C, c++ for C++, py for Python, and sh for Shell.

The following files are created by the server program.

* USERS: The list of users and their passwords.
* CONT.stat: Submission statistics for contest CONT.
* logs/: Submitted files are stored in this directory.