Sphere Online Judge (SPOJ)

list of classical problems

ID	NAME	QUALITY	USERS	ACC %	DIFFICULTY C I
2139	Gossipers	3	599	31.67	21 26
2140	(un)Fair Play		75	38.22
2141	Golden Garden		17	17.09
2142	Arranging Flowers		24	9.77
2143	Dependency Problems	4	519	38.94	17 13
2144	K Edge-disjoint Branchings		9	15.83
2147	Root of a Linear Equation		61	8.58	34 17
2148	Candy III	54	20484	25.33	9 5
2149	Biased Standings	21	3621	33.54	5 5
2150	Counting Subsequences	13	1029	29.41	9 13
2151	Digital Calculator		23	5.88
2152	Hilbert Curve	1	13	19.02	34 34
2153	Internet is Faulty		63	40.22
2154	Kruskal		83	14.19
2157	Anti-Blot System	104	12952	45.23	10 5
2159	Delicious Cake		29	15.81
2160	Here-There		28	25.25
2161	Pixel Shuffle		29	19.57	50 17
2162	Towers of Powers		28	19.72
2171	Ambiguous Codes	1	84	39.02
2172	Ballroom Lights	1	33	33.75	34 17
2173	Car Plates Competition	1	256	41.66	17 17
2174	Drop the Triples	5	117	29.02	21 24
2175	Emoticons	3	330	21.98	23 28
2176	Finding Seats	2	221	14.88	34 34
2177	Galou is back!	-1	224	31.34
2178	He is offside!	5	8423	50.14	3 4
2179	ICPC Scoreboard	1	175	29.30	17 17
2180	Justice League		76	48.04
2185	Musical Optimization	1	70	42.19
2189	Making Pairs	1	43	15.89	34 42
2202	Tan and His Interesting Game		43	23.38
2270	Balloons in a Box		169	23.52
2271	Undecodable Codes		46	12.23
2272	Crossing the Desert		50	19.18
2273	Ferries		29	17.99
2274	Island Hopping	1	205	25.00	17 1
2275	Toil for Oil		13	30.72
2276	Partitions	1	20	11.07	34 34
2277	Silly Sort	30	837	54.52	17 27
2317	Bracket Sequence	1	52	23.22	26 34
2318	Overlapping Words		88	22.70
2319	Sequence		217	28.07
2320	Manhattan	9	699	32.29	20 34
2321	Segments	2	151	14.24	17 34
2322	Tree Game	2	323	43.34	26 42
2323	Broken Compass		42	13.41
2324	Mario	1	59	13.65	34 34
2325	String Distance		211	21.28
2371	Another Longest Increasing Subsequence Problem	17	818	13.54	29 33

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