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	12.20
2142	Arranging Flowers		24	9.73
2143	Dependency Problems	4	520	39.01	17 13
2144	K Edge-disjoint Branchings		9	12.46
2147	Root of a Linear Equation		64	8.74	34 17
2148	Candy III	54	20527	25.32	9 5
2149	Biased Standings	21	3652	33.60	5 5
2150	Counting Subsequences	13	1030	29.41	9 13
2151	Digital Calculator		23	5.73
2152	Hilbert Curve	1	13	16.99	34 34
2153	Internet is Faulty		66	37.50
2154	Kruskal		84	13.95
2157	Anti-Blot System	104	12957	45.23	10 5
2159	Delicious Cake		29	14.39
2160	Here-There		29	24.76
2161	Pixel Shuffle		33	20.72	50 17
2162	Towers of Powers		26	15.64
2171	Ambiguous Codes	1	85	39.10
2172	Ballroom Lights	1	35	33.14	34 17
2173	Car Plates Competition	1	260	41.97	17 17
2174	Drop the Triples	5	119	29.04	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	31.22
2178	He is offside!	5	8427	50.14	3 4
2179	ICPC Scoreboard	1	178	29.60	17 17
2180	Justice League		78	48.06
2185	Musical Optimization	1	72	42.92
2189	Making Pairs	1	47	16.23	34 42
2202	Tan and His Interesting Game		44	23.00
2270	Balloons in a Box		171	23.69
2271	Undecodable Codes		47	12.08
2272	Crossing the Desert		53	19.88
2273	Ferries		32	18.79
2274	Island Hopping	1	206	25.07	17 1
2275	Toil for Oil		14	30.41
2276	Partitions	1	23	12.54	34 26
2277	Silly Sort	30	881	55.43	17 27
2317	Bracket Sequence	1	54	22.76	26 34
2318	Overlapping Words		89	22.26
2319	Sequence		218	28.10
2320	Manhattan	9	701	32.34	20 34
2321	Segments	2	152	14.25	17 34
2322	Tree Game	2	324	43.40	26 42
2323	Broken Compass		46	13.66
2324	Mario	1	62	13.90	34 34
2325	String Distance		213	21.47
2371	Another Longest Increasing Subsequence Problem	18	827	13.59	30 33

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