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	38.08
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	12.46
2147	Root of a Linear Equation		65	8.82	34 17
2148	Candy III	54	20534	25.33	9 5
2149	Biased Standings	21	3661	33.63	5 5
2150	Counting Subsequences	13	1030	29.41	9 13
2151	Digital Calculator		23	5.73
2152	Hilbert Curve	1	13	15.91	34 34
2153	Internet is Faulty		67	37.81
2154	Kruskal		84	13.95
2157	Anti-Blot System	104	12962	45.24	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	14.80
2171	Ambiguous Codes	1	85	39.25
2172	Ballroom Lights	1	35	33.14	34 17
2173	Car Plates Competition	1	260	41.97	17 17
2174	Drop the Triples	5	120	28.96	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	31.22
2178	He is offside!	5	8435	50.14	3 4
2179	ICPC Scoreboard	1	179	29.68	17 17
2180	Justice League		78	48.06
2185	Musical Optimization	1	72	42.92
2189	Making Pairs	1	47	15.94	34 42
2202	Tan and His Interesting Game		45	24.76
2270	Balloons in a Box		171	23.69
2271	Undecodable Codes		47	12.08
2272	Crossing the Desert		53	19.88
2273	Ferries		32	19.08
2274	Island Hopping	1	206	25.07	17 1
2275	Toil for Oil		14	28.57
2276	Partitions	1	24	12.82	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		217	28.07
2320	Manhattan	9	702	32.38	20 34
2321	Segments	2	155	14.15	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	21.46
2371	Another Longest Increasing Subsequence Problem	18	828	13.59	30 33

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