Sphere Online Judge (SPOJ)

list of classical problems

ID	NAME	USERS	ACC %	DIFFICULTY C I
8951	brownie	62	48.75
8971	LQDNUMBERS	31	36.44
8992	A los saltos	36	30.82
9000	Bob and his new kite factory	2	1.44
9030	Bob and his towers	38	31.76
9038	Chessboard Billiard	44	25.19
9063	Shuffling cards	17	31.65
9084	Journey to Mars	88	23.10
9086	Formula 3D	6	21.21
9118	Genetic Fraud	149	29.67
9121	Magical Crafting	56	47.48
9123	Security Zone	36	27.22
9124	Sightseeing	116	17.61
9125	Suiting Weavers	84	29.38
9137	Pyramid Sums	92	34.78	34 17
9161	Legendre symbol	184	45.69	9 9
9190	Perfect Maze	31	1.73
9260	Perfect Road	12	16.55	17 17
9331	DCD	61	51.22	17 1
9378	Landfill	37	42.57
9382	Complan Carnival	34	35.77
9430	The game of 31	160	38.72	6 17
9434	New Horizons	10	30.36
9440	To Add or to Multiply	15	14.71
9445	Attack of the Clones	26	50.85
9446	Shortest Circuit Evaluation	28	46.67
9447	Genetics	41	35.29
9448	Swarm of Polygons	36	35.59
9489	Johny Hates Math	21	16.92
9506	Jimmy´s Travel Plan	17	40.00
9507	Mario and Mushrooms	340	56.84	1 34
9508	Magic Bitwise AND Operation	104	12.72
9509	Shortest Path on a Cylinder	11	28.78
9510	Ads Proposal	63	24.94
9511	24-Puzzle	23	23.14
9512	Bombing	83	22.69	17 17
9513	Game	18	32.73
9515	Dwarven Sniper´s Hunting	11	60.00
9516	XOR Equations	14	18.07
9517	Unlock the Cellphone	11	26.88
9527	Department	7	5.15	34 17
9528	Johns Trip	14	27.87
9534	Turn on the lights	64	32.57
9543	Dynamic Congruence Equation System	9	51.16	50 50
9636	A Canvas Building	65	18.95	17 17
9638	Circuits	25	9.82	50 34
9642	Getting There Fast	14	14.49
9645	Joy of CompuTenis	6	17.65
9686	Yummy Triangular Pizza	467	65.91	26 17
9689	Very Boring Homework	15	33.33