Sphere Online Judge (SPOJ)

list of classical problems

ID	NAME	QUALITY	USERS	ACC %	DIFFICULTY C I
2139	Gossipers	3	591	31.68	21 26
2140	(un)Fair Play		74	38.68
2141	Golden Garden		17	17.70
2142	Arranging Flowers		23	9.57
2143	Dependency Problems	4	518	38.91	17 13
2144	K Edge-disjoint Branchings		9	16.14
2147	Root of a Linear Equation		59	8.47	34 17
2148	Candy III	54	20436	25.32	9 5
2149	Biased Standings	21	3563	33.39	5 5
2150	Counting Subsequences	13	1027	29.52	9 13
2151	Digital Calculator		22	5.81
2152	Hilbert Curve	1	13	19.02	34 34
2153	Internet is Faulty		64	41.34
2154	Kruskal		83	14.78
2157	Anti-Blot System	104	12938	45.22	10 5
2159	Delicious Cake		29	15.94
2160	Here-There		27	26.63
2161	Pixel Shuffle		29	19.57	50 17
2162	Towers of Powers		28	19.72
2171	Ambiguous Codes	1	83	38.78
2172	Ballroom Lights	1	33	33.75	34 17
2173	Car Plates Competition	1	256	41.66	17 17
2174	Drop the Triples	5	116	29.73	21 24
2175	Emoticons	3	328	21.95	23 28
2176	Finding Seats	2	220	14.85	34 34
2177	Galou is back!	-1	223	31.13
2178	He is offside!	5	8400	50.12	3 4
2179	ICPC Scoreboard	1	175	29.30	17 17
2180	Justice League		76	48.04
2185	Musical Optimization	1	69	42.36
2189	Making Pairs	1	44	16.21	34 42
2202	Tan and His Interesting Game		42	23.76
2270	Balloons in a Box		166	23.53
2271	Undecodable Codes		46	12.26
2272	Crossing the Desert		50	19.18
2273	Ferries		28	17.39
2274	Island Hopping	1	202	24.91	17 1
2275	Toil for Oil		13	30.72
2276	Partitions	1	19	10.76	34 34
2277	Silly Sort	30	835	54.47	17 27
2317	Bracket Sequence	1	51	22.78	26 34
2318	Overlapping Words		88	22.70
2319	Sequence		217	28.09
2320	Manhattan	9	696	32.28	20 34
2321	Segments	2	151	14.30	17 34
2322	Tree Game	2	323	43.34	26 42
2323	Broken Compass		41	13.43
2324	Mario	1	59	13.68	34 34
2325	String Distance		210	21.18
2371	Another Longest Increasing Subsequence Problem	16	804	13.48	29 33

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