Sphere Online Judge (SPOJ)

list of classical problems

ID	NAME	QUALITY	USERS	ACC %	DIFFICULTY C I
20	The Bytelandian Cryptographer (Act IV)	2	55	26.85	21 34
34	Run Away	2	474	21.91	26 34
68	Expression		160	30.27	1 34
85	Dice Contest		44	21.14	34 34
88	Which is Next	1	127	20.65	34 34
109	Exchanges	1	124	45.17	34
112	Horizontally Visible Segments	1	155	27.70	17 34
118	Rhombs		104	47.01	1 34
182	Window	1	45	29.80	17 34
186	The lightest language	1	137	24.74	17 34
196	Musketeers	2	485	30.23	17 34
202	Rockets	-1	56	12.18	34 34
215	Panic in the Plazas		83	20.53	34 34
262	Connections	1	111	28.84	34 34
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		100	30.21	1 34
369	Math I		87	25.41	34 34
387	Travelling tours	1	304	53.89	30 34
401	Translations		131	38.11	17 34
421	Another Road Problem		67	24.36	17 34
481	Roots of polynomial		37	24.90	17 34
598	Increasing Subsequences		142	34.21	34 34
685	Partition the sequence	3	230	21.06	23 34
707	Triple-Free Sets	1	161	40.53	34 34
780	The Archipelago		36	42.18	45 34
839	Optimal Marks	8	821	24.47	28 34
1183	Accomodate the palace	4	546	52.38	17 34
1420	Geometry and a Square	1	268	33.93	17 34
1433	The Sum	2	279	16.95	42 34
1441	The Clever Typist	1	34	9.67	17 34
1466	Blue Mary Needs Help Again	5	203	20.59	30 34
1476	Maximum Profit	6	339	31.91	21 34
1480	Let us count 1 2 3	1	72	14.81	1 34
1526	Ranklist Sorting	1	23	12.75	17 34
1552	Mobiles		184	27.52	34 34
1644	Trees	1	35	14.64	34 34
1687	Logic II	1	24	12.45	34 34
1712	Permalex	-1	168	19.49	34 34
1748	Sequence Partitioning II	1	54	25.26	17 34
1771	Yet Another N-Queen Problem	2	320	24.41	17 34
1789	Huffman´s Greed	1	86	45.97	17 34
1825	Free tour II	1	536	14.11	17 34
1833	Sudoku	1	48	32.02	34 34
1843	Leonardo Notebook	3	359	33.94	17 34
1875	Cool Numbers	6	164	30.38	30 34
1878	Farmers Cattle	1	57	37.62	34 34
1879	Game Time	1	101	22.59	34 34
2000	Boxes (Hard)	2	17	3.07	26 34

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