Sphere Online Judge (SPOJ)

list of classical problems

ID	NAME	QUALITY	USERS	ACC %	DIFFICULTY C I
102	GX Light Pipeline Inc		80	31.09
104	Highways	2	821	20.59	23 28
105	Alice and Bob	3	179	26.74	42 42
106	Binary Stirling Numbers	3	2693	37.10	4 17
107	Calendar of the Maya	5	137	44.42	21 17
108	Decoding Morse Sequences	7	973	25.04	24 17
109	Exchanges	1	130	43.31	34
110	Fill the Cisterns	29	1425	31.42	21 20
112	Horizontally Visible Segments	1	162	27.39	17 34
116	Intervals	5	1199	24.27	21 24
118	Rhombs		113	42.32	1 34
120	Solitaire	8	370	23.48	26 16
122	Voracious Steve	2	275	29.95	23 23
123	Paying in Byteland	2	479	46.72	6 17
134	Phony Primes	1	183	19.22	23 23
137	Partition	17	789	36.73	17 20
138	Election Posters	65	2343	25.84	20 21
139	The Long and Narrow Maze	1	211	20.16	17 17
140	The Loner		160	21.49	34 17
142	Johnny and the Glue		110	38.36	17 17
145	Aliens	2	436	30.02	34 42
150	Where to Drink the Plonk?	1	508	35.63
154	Sweet and Sour Rock	80	3451	51.17	14 17
160	Choosing a Palindromic Sequence		98	32.39	17 17
174	Paint templates	1	60	38.04	9 17
175	Polygon		72	22.47
176	Sum of one-sequence	5	671	33.60	11 27
179	Word equations		188	21.95	9 9
180	How to pack containers	1	108	36.13	1 1
181	Scuba diver	99	3911	26.08	18 18
182	Window	1	50	30.62	17 34
183	Assembler circuits		61	31.78
186	The lightest language	1	184	26.33	17 34
187	Flat broken lines	2	105	39.78	9 17
188	Rectangles	2	187	12.83	17 23
196	Musketeers	2	510	30.46	17 34
200	Monodigital Representations	1	168	30.27	26 26
201	The Game of Polygons	1	256	39.01	1 17
203	Potholers	22	2290	26.51	16 12
205	Icerink		8	12.22
206	Bitmap	247	9660	28.29	15 16
207	Three-coloring of binary trees	16	887	36.10	20 17
208	Store-keeper	2	135	15.52	34 26
209	The Map		248	40.22	1 1
211	Primitivus recurencis		286	27.94	1 17
236	Converting number formats		154	40.00	1 1
245	Square Root	4	597	13.24	20 10
278	Bicycle		62	13.55	34 1
279	Interesting number	26	846	24.20	19 24
280	Lifts		45	17.61	17 1

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