Sphere Online Judge (SPOJ)

list of classical problems

ID	NAME	QUALITY	USERS	ACC %	DIFFICULTY C I
204	Sleepwalker		82	27.89
205	Icerink		6	11.27
206	Bitmap	230	7803	26.83	15 16
207	Three-coloring of binary trees	15	822	35.60	18 16
208	Store-keeper	2	98	15.67	34 34
209	The Map		218	42.99
210	The Altars		42	14.29
211	Primitivus recurencis		207	26.85
212	Water among Cubes	44	1150	26.26	24 28
215	Panic in the Plazas		77	19.50
217	Soldiers on Parade	2	120	28.57	26 17
220	Relevant Phrases of Annihilation		516	21.53
224	Vonny and her dominos	4	594	51.87	9 9
226	Jewelry and Fashion	1	17	14.60	34 50
227	Ordering the Soldiers	21	1343	32.97	19 22
228	Shamans		135	20.56
229	Sorting is easy		115	24.14
231	The Zebra Crossing		10	2.52
234	Getting Rid of the Holidays (Act I)		94	13.94
235	Very Fast Multiplication	22	982	28.41	26 22
236	Converting number formats		143	43.38
237	Sums in a Triangle	-14	3451	42.02	27 10
238	Getting Rid of the Holidays (Act II)		77	15.58
239	Tour de Byteland	1	79	24.86	17 17
241	Arranging the Blocks		52	12.95
243	Stable Marriage Problem	10	1203	44.58	17 22
245	Square Root	4	476	15.00	34 13
247	Chocolate	65	3625	47.01	10 18
260	Containers	2	273	45.96	23 17
261	Triangle Partitioning		198	59.44
262	Connections	1	98	27.21	34 34
263	Period	48	2240	37.83	11 17
264	Corporative Network	13	494	23.75	19 21
272	Cave Exploration	1	36	16.48
274	Johnny and the Watermelon Plantation		209	24.25
275	The Water Ringroad		2	12.12
277	City Game	14	1090	37.56	19 20
278	Bicycle		53	14.29
279	Interesting number	24	742	23.63	18 25
280	Lifts		42	18.87
283	Naptime		187	13.17
286	Selfish Cities	1	662	38.61	34 34
287	Smart Network Administrator	3	410	27.12	24 31
288	Prime or Not	60	3623	18.19	22 21
290	Polynomial Equations		56	21.51
291	Cube Root	2	237	16.49	27 17
292	Alibaba	1	149	22.05
293	Officers on the Beat		10	20.96
296	Teamwork is Crucial		66	30.77
297	Aggressive cows	895	22220	35.22	17 23

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