Sphere Online Judge (SPOJ)

Private submission

Private submission won't be visible to other users and
won't be taken into consideration in ranks.

Disqualify submission

Your submission will be disqualified. Operation
is not reversible.

Hidden submission

Public submission

Click here to view source code.

Source code of every submission to this problem
in this contest is public.

Help

ID	DATE	PROBLEM	RESULT	TIME	MEM	LANG
19698543	2017-06-28 23:05:04	Is it a tree	accepted	0.07	199M	LISP sbcl
19698265	2017-06-28 22:04:30	Is it a tree	wrong answer	0.08	199M	LISP sbcl
19698235	2017-06-28 22:00:19	Is it a tree	wrong answer	0.07	199M	LISP sbcl
19697990	2017-06-28 21:00:04	Is it a tree	runtime error (NZEC)	0.10	199M	LISP sbcl
19697820	2017-06-28 20:27:21	Is it a tree	runtime error (NZEC)	0.11	199M	LISP sbcl

code...