Sphere Online Judge (SPOJ)

list of classical problems

ID	NAME	QUALITY	USERS	ACC %
1671	Another Mathematical Problem		61	11.52
1672	The Great Indian Wedding		43	22.58
1674	The Explosion		152	26.35
1678	Royal Treasury		70	11.71
1683	Expressions		354	40.02
1685	Grocery store		198	24.17
1689	Hard Problem		15	28.07
1695	Grandpa’s Rubik Cube	1	110	60.61
1701	Earth Observation with a Mobile Robot Team		10	40.74
1705	The Game of Efil		89	49.61
1708	Square Count		70	30.29
1709	Swamp Things		285	40.35
1715	Another Necklace Problem		50	19.00
1722	Life, the Universe, and Everything II		66	33.90
1725	The Importance		97	41.48
1726	Exchange		18	6.52
1731	Counting Triangles III	1	263	33.76
1739	Yet Another Equation		220	40.64
1772	Find The Determinant II		73	27.66
1788	Fractan		44	32.76
1793	Text Generater II		55	30.43
1800	Fixed Partition Contest Management		59	36.64
1803	Fold		57	41.94
1810	Nuclear Plants		21	14.09
1815	Problems Collection (Volume X)		76	7.33
1838	Ticket to Ride		79	39.69
1839	The Bookcase	1	121	35.96
1842	Lineland Airport		32	18.87
1877	Enrich my purse		152	27.14
1880	Hanoi Calls		203	55.14
1962	Circles		56	18.68
1963	Image Projections		102	32.04
1964	Tree cut		146	37.95
1966	Ski Valley		114	18.90
2002	Random Number Generator		97	42.09
2019	The Rolling Ball		3	5.26
2022	Truth Or Lie		101	22.44
2031	Please help You-Know-Who		35	32.89
2047	Stone Removing Game	-1	132	38.11
2052	Hexagonal Parcels		75	29.07
2060	Tough Water Level		34	26.34
2129	Cake		69	21.65
2130	Trolls		29	46.03
2132	Puzzle		87	33.11
2140	(un)Fair Play		74	38.91
2141	Golden Garden		17	17.86
2142	Arranging Flowers		23	9.57
2144	K Edge-disjoint Branchings		9	16.21
2151	Digital Calculator		22	5.81
2153	Internet is Faulty		64	41.34