Sphere Online Judge (SPOJ)

list of classical problems

ID	NAME	QUALITY	USERS	ACC %	DIFFICULTY C I
36674	PIZZA	4	416	17.30	1 13
37389	Weird Construction	2	17	8.77	1 6
39219	Brenden Politeness Filter	1	46	47.15	1 1
39762	TABTABTAB	2	51	28.94	1 17
40982	Teleporters and Gems II	3	33	19.02	1 1
41212	Bankomat	2	26	36.47	1 1
42049	Maximum Sum of the Array	2	72	8.67	1 3
75	Editor		51	36.88
76	Editor Inverse		64	14.98
102	GX Light Pipeline Inc		76	30.54
109	Exchanges	1	126	45.35	34
146	Fast Multiplication Again		36	12.50
150	Where to Drink the Plonk?	1	495	34.69
175	Polygon		66	22.90
183	Assembler circuits		58	31.03
199	Empty Cuboids	-1	142	34.74
205	Icerink		8	12.79
231	The Zebra Crossing		12	2.67
241	Arranging the Blocks		52	13.04
261	Triangle Partitioning		199	58.11
275	The Water Ringroad		2	10.00
292	Alibaba	1	177	22.95
293	Officers on the Beat		11	21.43
296	Teamwork is Crucial		70	31.59
325	The Tall Windmills		82	24.75	34
350	Landscaping	1	91	29.91
380	Bullshit Bingo		708	33.43
383	European railroad tracks		222	30.17
386	Help the problem setter		97	45.82
404	Scanner		56	12.24
418	Necklace		43	16.76
698	Plane Hopping	1	288	25.61	17
760	Convex Hull 3D		117	41.47
850	Soccer Choreography		4	4.02
866	DNA Translation		117	21.51
944	Free Tour		16	3.34
999	Generalized Matrioshkas		413	32.45
1270	Paint By Numbers		21	20.96
1444	DEL Command II		32	8.74
1447	A Game of Toy Bricks		37	25.79
1451	01 Sequence		94	28.29
1452	Birthday Cake		79	23.69
1454	Memory Distribution		20	18.01
1455	Program Analyser		25	15.25
1456	The Secret of a Lost City		17	35.94
1458	Help Blue Mary Please! (Act II)	1	80	17.26
1460	A Simple Calculator in the Galaxy		32	40.50
1462	Barbarians		46	14.68
1463	Robot Number M		75	48.55
1464	Editor II		58	18.59