Sphere Online Judge (SPOJ)

list of classical problems

ID	NAME	QUALITY	USERS	ACC %	DIFFICULTY C I
5160	Jinyuetuan Puzzle		40	36.69
5159	Island Explorer		34	15.28
5158	Heroes Arrangement		12	12.80
5157	Game Simulator	1	17	4.57	50 17
5156	Flowers Placement		41	31.06
5155	Exciting Time		40	13.06
5154	Cryptography Reloaded (Act II)		31	27.89
5153	Compressed String		40	30.00
5152	Brute-force Algorithm EXTREME	2	94	22.03	17 28
5151	Alice’s Cube	8	501	28.99	24 21
5150	Junk-Mail Filter	1	116	20.85
5149	History of Languages		27	15.54
5148	Get-Together at Stockholm	1	49	45.13	1 17
5147	Fire-Control System		30	18.50	34 17
5146	Experiment on a … Cable		12	41.38
5145	Déjà vu		16	19.23
5144	Cryptography Reloaded (Act I)		33	26.16
5143	Binary Integer		49	50.85
5142	A Pair of Graphs	1	66	56.25	17 17
5128	Bomb the Bridge	1	36	28.18	17 17
5120	Minimal Possible String	3	55	5.08	34 28
5117	Wine trading in Gergovia	76	5332	33.92	9 12
5115	Two "Ways"		63	14.95
5107	Playing with Marbles	7	786	23.60	12 8
5104	Spam Detection		14	20.69
5103	Top 10		41	16.26
5102	Mystic Craft		54	46.05
5093	Pretty Functions	1	37	23.67
5091	Feline Olympics - Mouseball	7	593	39.14	7 15
5084	Discrete Math Problem	6	280	31.46	15 24
5018	Street Gambler		26	43.55
5016	Guernica		19	51.06
5015	Decode the Castanets		32	43.14
5014	Crazy Receptionist		11	13.18
5011	Library for Madrid		55	42.17	17 17
5010	Lost in Madrid	1	189	31.15	1 1
4993	Traveling Salesman	8	1035	37.11	14 2
4988	Madrids One Way Streets	5	196	28.68	15 15
4987	Goal for Raúl	6	542	29.91	12 12
4951	Bridges! More bridges!	1	46	16.42	1 34
4948	Integer Factorization (29 digits)	8	100	15.66	40 34
4942	Integer Factorization (15 digits)	45	3398	32.34	11 11
4941	Integer Factorization (20 digits)	8	554	55.84	34 30
4908	Run-Length Mathematics	6	718	41.07	13 1
4882	Counting in a DAG	6	169	11.96	17 26
4881	Words on graphs		103	11.39	34
4871	Bridge	1	154	24.16	1 34
4839	Ant	3	190	39.06	23 28
4828	ZSequence		51	19.33
4785	Starship		10	28.80

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