score: better formatting of the score table
interactive tasks: solve deadlocks?
interactive tasks: logging of messages
-rename problem to task
+terminology: problem -> task ?
submit, check: unify command-line arguments
do we need SDIR?
clean up retest utility
writing of verdicts to stdout (include timing and check on interactive tasks, including judge errors)
+box: memory usage statistics (need to search for VMPeak in /proc/$PID/status, but it disappears too early)
Environment
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