Sphere Online Judge (SPOJ)

list of classical problems

ID	NAME	QUALITY	USERS	ACC %	DIFFICULTY C I
85	Dice Contest		47	22.05	34 34
88	Which is Next	1	129	20.61	34 34
99	Bus		184	22.16	34 17
140	The Loner		156	22.76	34 17
145	Aliens	2	421	29.86	34 42
149	Fencing in the Sheep	3	94	12.36	34 17
202	Rockets	-1	56	12.18	34 34
208	Store-keeper	2	127	15.42	34 26
215	Panic in the Plazas		83	20.53	34 34
226	Jewelry and Fashion	1	20	28.49	34 50
262	Connections	1	111	28.84	34 34
278	Bicycle		56	13.08	34 1
309	The Room Pattern	1	44	15.90	34 17
369	Math I		87	25.41	34 34
385	Game schedule required		148	28.48	34 1
389	Use of Hospital Facilities	1	50	11.68	34 26
398	Roll Playing Games		118	14.30	34 17
414	Equatorial Bonfire	1	71	30.48	34 17
484	Fossil in the Ice		435	22.10	34 17
598	Increasing Subsequences		142	34.21	34 34
684	Another Assignment Problem	1	103	12.40	34 1
687	Repeats	1	931	25.17	34 39
733	Mountain Walking	1	753	25.44	34 26
780	The Archipelago		37	42.23	34 26
861	Counting inversions	7	462	20.04	34 29
872	Mark-up		121	29.73	34 9
912	Submatrix of submatrix	1	166	26.16	34 17
1110	Sudoku	4	472	38.86	34 1
1267	Origin of Life		35	22.18	34 1
1269	CN Tower (Hard)		23	11.74	34 34
1448	3D Cover	3	93	26.61	34 26
1457	Help Blue Mary Please! (Act I)		13	1.75	34 17
1475	Play with Digit Seven	3	125	36.90	34 14
1552	Mobiles		184	27.52	34 34
1644	Trees	1	35	14.50	34 34
1687	Logic II	1	24	12.45	34 34
1712	Permalex	-1	168	19.49	34 34
1741	Tetris 3D	1	168	32.65	34 50
1776	DNA Laboratory	3	110	11.20	34 23
1797	Cardsharper	2	7	29.39	34 45
1833	Sudoku	1	49	32.22	34 34
1869	Making Mountains Out Of Molehills	1	14	15.93	34 17
1873	Accumulate Cargo	2	86	26.26	34 9
1878	Farmers Cattle	1	57	37.62	34 34
1879	Game Time	1	101	22.59	34 34
1960	Rectangles	4	164	16.40	34 28
1991	Another Continuous Fractions Problem	1	82	19.89	34 17
2147	Root of a Linear Equation		59	8.47	34 17
2152	Hilbert Curve	1	13	19.02	34 34
2172	Ballroom Lights	1	33	33.75	34 17

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