Sphere Online Judge (SPOJ)

list of classical problems

ID	NAME	QUALITY	USERS	ACC %	DIFFICULTY C I
2139	Gossipers	3	600	31.72	21 26
2140	(un)Fair Play		75	38.22
2141	Golden Garden		17	15.04
2142	Arranging Flowers		24	9.73
2143	Dependency Problems	4	520	39.01	17 13
2144	K Edge-disjoint Branchings		9	12.62
2147	Root of a Linear Equation		62	8.64	34 17
2148	Candy III	54	20521	25.33	9 5
2149	Biased Standings	21	3645	33.60	5 5
2150	Counting Subsequences	13	1029	29.40	9 13
2151	Digital Calculator		23	5.87
2152	Hilbert Curve	1	13	18.13	34 34
2153	Internet is Faulty		66	37.50
2154	Kruskal		84	13.95
2157	Anti-Blot System	104	12954	45.23	10 5
2159	Delicious Cake		29	15.21
2160	Here-There		28	24.51
2161	Pixel Shuffle		33	20.88	50 17
2162	Towers of Powers		26	15.87
2171	Ambiguous Codes	1	85	39.10
2172	Ballroom Lights	1	33	32.14	34 17
2173	Car Plates Competition	1	260	41.97	17 17
2174	Drop the Triples	5	118	29.02	21 24
2175	Emoticons	3	331	22.01	23 28
2176	Finding Seats	2	222	14.95	34 34
2177	Galou is back!	-1	225	31.48
2178	He is offside!	5	8426	50.13	3 4
2179	ICPC Scoreboard	1	178	29.60	17 17
2180	Justice League		76	47.75
2185	Musical Optimization	1	70	41.84
2189	Making Pairs	1	44	15.57	34 42
2202	Tan and His Interesting Game		43	22.67
2270	Balloons in a Box		171	23.69
2271	Undecodable Codes		46	12.10
2272	Crossing the Desert		53	19.88
2273	Ferries		30	18.28
2274	Island Hopping	1	206	25.07	17 1
2275	Toil for Oil		13	30.54
2276	Partitions	1	21	12.04	34 34
2277	Silly Sort	30	879	55.39	17 27
2317	Bracket Sequence	1	54	23.08	26 34
2318	Overlapping Words		87	22.38
2319	Sequence		218	28.10
2320	Manhattan	9	701	32.34	20 34
2321	Segments	2	152	14.28	17 34
2322	Tree Game	2	324	43.43	26 42
2323	Broken Compass		43	13.44
2324	Mario	1	61	13.69	34 34
2325	String Distance		213	21.47
2371	Another Longest Increasing Subsequence Problem	18	826	13.60	30 33

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