Sphere Online Judge (SPOJ)

list of classical problems

ID	NAME	QUALITY	USERS	ACC %	DIFFICULTY C I
4203	Double Queue	1	75	43.50	17 17
4204	Showstopper	1	83	21.90	17 34
4206	Fast Maximum Matching	29	1950	29.17	22 19
4210	Fast Maximum Matching		10	41.94
4211	Fast Maximum Flow		16	22.22
4212	Another Longest Increasing Subsequence Problem		10	46.15
4225	Payment System		30	66.67
4226	Japan	30	1742	23.26	16 19
4227	"Shortest" pair of paths	3	204	39.33	23 17
4235	Wandering Queen	25	835	15.16	23 19
4259	Pilots	33	1596	31.74	17 20
4273	Train TimeTable	7	422	33.97	14 8
4278	Battlefield		5	57.89
4300	Rectangles	174	26570	49.93	5 8
4302	(K,N)-Knight	3	310	24.71	14 24
4303	Dice	13	923	15.74	11 19
4305	Drilling	3	96	18.01	17 34
4306	The way to Bytemountain	1	29	41.25	34 34
4307	Stamps		27	41.56
4308	Byteantean towns		55	24.78
4309	Circular game		32	19.89
4310	Permutacja	4	160	40.19	12 17
4311	Quasi-template		49	32.93
4318	Catch Fish	11	491	32.65	21 26
4324	The fate of the pineapple		40	28.41
4329	Counting K-Rectangle	4	386	29.99	20 28
4343	Empty Boxes	26	3547	66.08	2 13
4350	Giá trị lớn nhất 3	14	408	23.19	28 19
4354	Snowflakes	1	807	24.91	9 21
4361	Connected Points		9	52.17
4378	Twofive		63	32.26
4390	Cards shuffing	2	117	26.48	26 21
4407	Counting Arborescence		100	34.02
4408	Build a Fence	37	12217	44.78	4 5
4409	Circle vs Triangle	1	59	19.77
4410	Repair the Door		58	22.54
4411	Counting Expressions		29	42.47
4412	Factorization, Factorization, Factorization	1	52	41.28
4413	Gem	3	96	40.66	23 12
4414	Highway		54	22.04
4415	Power of Integer	1	269	21.86	17 26
4416	Jumping Hands	1	207	66.67	17 17
4420	Counting Graphs		54	34.33
4421	Irreducible polynomials over GF2		62	18.01
4429	Spelling Lists	2	175	31.72	17 34
4452	Simple Arithmetics II	55	7444	42.38	11 5
4453	Bouncing Balls II		219	27.73
4454	Brackets II	8	411	35.91	26 24
4455	Going to the Movies		86	36.33
4457	Shopping II	3	145	34.91	17 1

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