Sphere Online Judge (SPOJ)

list of classical problems

ID	NAME	QUALITY	USERS	ACC %	DIFFICULTY C I
204	Sleepwalker		82	28.23
205	Icerink		6	11.27
206	Bitmap	220	7504	27.49	15 16
207	Three-coloring of binary trees	15	813	35.79	18 16
208	Store-keeper	2	98	15.69	34 34
209	The Map		217	43.14
210	The Altars		42	14.29
211	Primitivus recurencis		207	26.90
212	Water among Cubes	40	1095	28.22	24 27
215	Panic in the Plazas		77	19.50
217	Soldiers on Parade	2	120	28.62	26 17
220	Relevant Phrases of Annihilation		524	33.51
224	Vonny and her dominos	4	582	52.94	9 9
226	Jewelry and Fashion	1	17	14.70	34 50
227	Ordering the Soldiers	21	1333	34.43	19 22
228	Shamans		134	20.53
229	Sorting is easy		115	24.61
231	The Zebra Crossing		10	2.52
234	Getting Rid of the Holidays (Act I)		94	13.94
235	Very Fast Multiplication	21	948	31.55	26 22
236	Converting number formats		143	43.38
237	Sums in a Triangle	-14	3445	42.41	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	1201	45.25	17 22
245	Square Root	4	468	15.41	34 13
247	Chocolate	63	3403	48.45	10 18
260	Containers	2	269	45.69	23 17
261	Triangle Partitioning		197	59.60
262	Connections	1	97	27.42	34 34
263	Period	45	2155	44.80	11 17
264	Corporative Network	13	497	27.06	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	12	1084	40.30	19 21
278	Bicycle		53	14.29
279	Interesting number	24	740	24.48	18 25
280	Lifts		42	18.94
283	Naptime		174	37.72
286	Selfish Cities	1	660	40.53	34 34
287	Smart Network Administrator	3	404	26.63	24 31
288	Prime or Not	54	3338	18.91	23 21
290	Polynomial Equations		56	21.51
291	Cube Root	2	232	16.61	27 17
292	Alibaba	1	154	22.79
293	Officers on the Beat		10	16.46
296	Teamwork is Crucial		66	30.77
297	Aggressive cows	841	19354	37.95	16 22

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