Sphere Online Judge (SPOJ)

list of classical problems

ID	NAME	USERS	ACC %	DIFFICULTY C I
272	Cave Exploration	39	10.02	17 1
275	The Water Ringroad	2	10.00
278	Bicycle	56	13.08	34 1
280	Lifts	43	17.38	17 1
283	Naptime	611	25.51	17 1
290	Polynomial Equations	62	22.90	17 17
293	Officers on the Beat	11	21.43
296	Teamwork is Crucial	70	31.59
318	Pythagorean Legacy	29	23.04	1 34
325	The Tall Windmills	82	24.75	34
327	Platon and Socrates	50	12.75	9 34
332	Hard Question	102	32.33	1 34
334	The Philosophical Dispute	55	40.48	17 17
351	Ha-noi!	382	42.22	1 1
369	Math I	87	25.41	34 34
371	Boxes	540	35.79	1 26
374	Count maximum matrices	235	20.85	1 17
380	Bullshit Bingo	708	33.43
382	Decorate the wall	213	35.24	1 17
383	European railroad tracks	222	30.17
385	Game schedule required	148	28.48	34 1
386	Help the problem setter	97	45.82
391	Railroads	85	17.48	17 17
392	Spin	38	24.40	1 17
393	Hexagon	70	48.70	17 1
396	Hit or Miss	129	44.62	1 1
398	Roll Playing Games	118	14.30	34 17
401	Translations	131	38.11	17 34
404	Scanner	56	12.24
405	Tin Cutter	134	33.72	17 17
406	Logic	107	22.51	17 9
407	Random Number	44	28.25	17 17
412	K-path cover	181	20.04	1 50
418	Necklace	43	16.76
421	Another Road Problem	68	24.54	17 34
481	Roots of polynomial	37	24.90	17 34
484	Fossil in the Ice	435	22.10	34 17
598	Increasing Subsequences	142	34.21	34 34
677	A place for the brewery	210	27.71	17 1
682	Pairs of Integers	204	25.26	1 1
697	Matrix Words	94	25.33	1 1
700	Branch Prediction	75	18.24	17 1
702	Barn Expansion	152	23.28	1 17
729	Move your armies	78	20.32	1 1
734	Ivan and his interesting game	228	34.45	17 17
757	Thermal Luminescence	123	39.03	1 1
760	Convex Hull 3D	117	41.47
780	The Archipelago	37	42.23	34 26
827	Trigonometric optimization	78	28.03	1 34
850	Soccer Choreography	4	4.02

list of classical problems

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