Sphere Online Judge (SPOJ)

list of classical problems

ID	NAME	USERS	ACC %	DIFFICULTY C I
872	Mark-up	125	30.16	34 9
900	Split Windows	33	58.33	17 1
901	Index Generation	42	53.76	17 1
903	Double Vision	66	56.72	1 1
944	Free Tour	16	3.20
972	Birthday	122	18.52	17 17
987	Mobile	70	15.35	17 17
999	Generalized Matrioshkas	417	32.59
1004	Polygon Encoder	60	10.75	17 1
1166	Dead Fraction	320	23.26	12 17
1182	Sorted bit squence	293	41.95	17 1
1267	Origin of Life	37	24.12	34 1
1269	CN Tower (Hard)	23	10.93	34 34
1270	Paint By Numbers	22	21.30
1335	Maze	64	17.71	17 17
1421	Goods	142	28.90	1 34
1444	DEL Command II	36	9.26	17 34
1447	A Game of Toy Bricks	39	26.22	1 1
1452	Birthday Cake	94	25.05	17 34
1453	Optimal Connected Subset	154	46.88	17 28
1454	Memory Distribution	24	17.44	34 17
1455	Program Analyser	26	15.18	34 17
1456	The Secret of a Lost City	21	28.12	17 17
1457	Help Blue Mary Please! (Act I)	13	1.75	34 17
1460	A Simple Calculator in the Galaxy	34	40.80	34
1462	Barbarians	48	14.80	1 1
1463	Robot Number M	76	44.74	1 17
1464	Editor II	62	18.78	17 17
1468	Outside it is now raining	26	23.97	34 17
1472	Tom and Jerry	63	37.70	1 1
1473	Lemon Tree in the Moonlight	22	19.49
1477	Play with a Tree	88	14.66
1478	The Easiest Problem	68	8.82
1480	Let us count 1 2 3	86	15.62	1 34
1483	Colorful Lights Party	13	10.84
1487	Query on a tree III	571	17.98	34 1
1536	Help Blue Mary Please! (Act III)	29	21.05
1552	Mobiles	186	27.77	34 34
1554	Zoo	111	28.36
1671	Another Mathematical Problem	63	11.62
1672	The Great Indian Wedding	47	22.92
1674	The Explosion	154	23.62
1676	Text Generator	251	21.61	17 26
1678	Royal Treasury	70	11.57
1683	Expressions	355	39.61
1685	Grocery store	199	24.23
1689	Hard Problem	16	26.15
1701	Earth Observation with a Mobile Robot Team	9	37.04
1704	Countdown	298	25.08	26 9
1705	The Game of Efil	91	49.24

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