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	198	6993	27.15	14 16
207	Three-coloring of binary trees	14	801	35.76	17 15
208	Store-keeper	2	98	15.80	34 34
209	The Map		215	43.04
210	The Altars		42	14.29
211	Primitivus recurencis		200	26.54
212	Water among Cubes	38	1011	28.18	23 27
215	Panic in the Plazas		77	19.50
217	Soldiers on Parade	2	120	28.62	26 17
220	Relevant Phrases of Annihilation		512	34.31
224	Vonny and her dominos	4	563	52.65	9 9
226	Jewelry and Fashion	1	17	15.03	34 50
227	Ordering the Soldiers	18	1299	34.31	19 22
228	Shamans		133	20.53
229	Sorting is easy		114	24.87
231	The Zebra Crossing		10	2.54
234	Getting Rid of the Holidays (Act I)		94	13.95
235	Very Fast Multiplication	18	906	31.61	27 22
236	Converting number formats		143	43.38
237	Sums in a Triangle	-10	3414	42.29	26 10
238	Getting Rid of the Holidays (Act II)		77	15.58
239	Tour de Byteland	1	79	24.91	17 17
241	Arranging the Blocks		50	12.64
243	Stable Marriage Problem	10	1182	45.25	17 22
245	Square Root	4	462	15.64	34 13
247	Chocolate	60	3276	48.28	10 17
260	Containers	2	269	45.69	23 17
261	Triangle Partitioning		195	59.56
262	Connections	1	96	27.29	34 34
263	Period	41	2017	44.42	11 18
264	Corporative Network	13	484	27.21	19 21
272	Cave Exploration	1	36	16.48
274	Johnny and the Watermelon Plantation		208	24.21
275	The Water Ringroad		2	12.12
277	City Game	11	1076	40.10	19 21
278	Bicycle		53	14.43
279	Interesting number	23	730	24.56	19 25
280	Lifts		42	18.94
283	Naptime		155	37.35
286	Selfish Cities	1	650	40.20	34 34
287	Smart Network Administrator	3	397	26.45	24 31
288	Prime or Not	38	3023	19.09	22 22
290	Polynomial Equations		55	21.35
291	Cube Root	1	228	16.63	26 13
292	Alibaba		153	22.70
293	Officers on the Beat		8	7.75
296	Teamwork is Crucial		66	30.77
297	Aggressive cows	702	15736	37.82	16 22

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