Sphere Online Judge (SPOJ)

list of classical problems

ID	NAME	QUALITY	USERS	ACC %	DIFFICULTY C I
2139	Gossipers	3	600	31.69	21 26
2140	(un)Fair Play		75	38.22
2141	Golden Garden		17	15.62
2142	Arranging Flowers		24	9.77
2143	Dependency Problems	4	519	38.94	17 13
2144	K Edge-disjoint Branchings		9	15.65
2147	Root of a Linear Equation		61	8.55	34 17
2148	Candy III	54	20511	25.32	9 5
2149	Biased Standings	21	3631	33.57	5 5
2150	Counting Subsequences	13	1030	29.43	9 13
2151	Digital Calculator		23	5.87
2152	Hilbert Curve	1	13	19.02	34 34
2153	Internet is Faulty		63	39.34
2154	Kruskal		84	14.06
2157	Anti-Blot System	104	12954	45.23	10 5
2159	Delicious Cake		29	15.69
2160	Here-There		28	25.25
2161	Pixel Shuffle		29	19.49	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	258	41.54	17 17
2174	Drop the Triples	5	117	28.93	21 24
2175	Emoticons	3	331	22.01	23 28
2176	Finding Seats	2	222	14.88	34 34
2177	Galou is back!	-1	225	31.48
2178	He is offside!	5	8425	50.15	3 4
2179	ICPC Scoreboard	1	176	29.31	17 17
2180	Justice League		76	48.04
2185	Musical Optimization	1	70	41.84
2189	Making Pairs	1	43	15.76	34 42
2202	Tan and His Interesting Game		43	23.38
2270	Balloons in a Box		170	23.61
2271	Undecodable Codes		46	12.10
2272	Crossing the Desert		50	18.32
2273	Ferries		30	18.28
2274	Island Hopping	1	206	25.07	17 1
2275	Toil for Oil		13	30.54
2276	Partitions	1	20	11.00	34 34
2277	Silly Sort	30	838	54.54	17 27
2317	Bracket Sequence	1	53	22.86	26 34
2318	Overlapping Words		87	22.38
2319	Sequence		218	28.10
2320	Manhattan	9	702	32.40	20 34
2321	Segments	2	152	14.28	17 34
2322	Tree Game	2	324	43.31	26 42
2323	Broken Compass		43	13.55
2324	Mario	1	59	13.65	34 34
2325	String Distance		213	21.42
2371	Another Longest Increasing Subsequence Problem	17	822	13.57	29 33

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