Sphere Online Judge (SPOJ)

list of classical problems

ID	NAME	QUALITY	USERS	ACC %	DIFFICULTY C I
2139	Gossipers	3	601	31.74	21 26
2140	(un)Fair Play		75	38.08
2141	Golden Garden		17	12.20
2142	Arranging Flowers		25	9.87
2143	Dependency Problems	4	521	38.96	17 13
2144	K Edge-disjoint Branchings		9	12.39
2147	Root of a Linear Equation		66	8.90	34 17
2148	Candy III	54	20541	25.33	9 5
2149	Biased Standings	21	3669	33.65	5 5
2150	Counting Subsequences	13	1031	29.42	9 13
2151	Digital Calculator		23	5.69
2152	Hilbert Curve	1	13	15.91	34 34
2153	Internet is Faulty		69	38.54
2154	Kruskal		84	13.95
2157	Anti-Blot System	104	12963	45.23	10 5
2159	Delicious Cake		30	14.64
2160	Here-There		30	25.12
2161	Pixel Shuffle		34	21.03	50 17
2162	Towers of Powers		26	13.87
2171	Ambiguous Codes	1	85	39.25
2172	Ballroom Lights	1	35	32.94	34 17
2173	Car Plates Competition	1	261	42.05	17 17
2174	Drop the Triples	5	121	29.08	21 24
2175	Emoticons	3	331	22.00	23 28
2176	Finding Seats	2	222	14.95	34 34
2177	Galou is back!	-1	225	30.95
2178	He is offside!	5	8442	50.13	3 4
2179	ICPC Scoreboard	1	180	29.76	17 17
2180	Justice League		82	48.82
2185	Musical Optimization	1	73	43.15
2189	Making Pairs	1	47	15.90	34 42
2202	Tan and His Interesting Game		46	25.18
2270	Balloons in a Box		171	23.69
2271	Undecodable Codes		48	12.27
2272	Crossing the Desert		54	20.12
2273	Ferries		32	18.75
2274	Island Hopping	1	207	25.14	17 1
2275	Toil for Oil		15	28.65
2276	Partitions	1	24	13.02	34 26
2277	Silly Sort	30	881	55.43	17 27
2317	Bracket Sequence	1	55	23.02	26 34
2318	Overlapping Words		90	22.40
2319	Sequence		217	28.07
2320	Manhattan	9	702	32.37	20 34
2321	Segments	2	156	14.13	17 34
2322	Tree Game	2	325	43.37	26 42
2323	Broken Compass		47	13.78
2324	Mario	1	63	14.00	34 34
2325	String Distance		214	21.51
2371	Another Longest Increasing Subsequence Problem	18	832	13.62	30 33

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