Sphere Online Judge (SPOJ)

list of classical problems

ID	NAME	QUALITY	USERS	ACC %
1460	A Simple Calculator in the Galaxy		32	40.50
1462	Barbarians		46	14.68
1463	Robot Number M		75	48.55
1464	Editor II		58	18.59
1468	Outside it is now raining		25	24.78
1472	Tom and Jerry		61	38.46
1473	Lemon Tree in the Moonlight		22	19.49
1477	Play with a Tree		88	14.68
1478	The Easiest Problem		68	8.92
1483	Colorful Lights Party		13	10.84
1487	Query on a tree III		547	17.55
1536	Help Blue Mary Please! (Act III)		29	21.26
1554	Zoo		110	29.26
1671	Another Mathematical Problem		61	11.37
1672	The Great Indian Wedding		44	22.32
1674	The Explosion		152	26.35
1678	Royal Treasury		70	11.71
1683	Expressions		355	40.03
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		287	40.34
1715	Another Necklace Problem		50	19.00
1722	Life, the Universe, and Everything II		66	33.90
1725	The Importance		96	40.89
1726	Exchange		18	6.52
1731	Counting Triangles III	1	263	33.76
1739	Yet Another Equation		223	40.79
1772	Find The Determinant II		80	28.65
1788	Fractan		44	32.76
1793	Text Generater II		55	30.43
1800	Fixed Partition Contest Management		58	35.59
1803	Fold		57	41.94
1810	Nuclear Plants		21	13.83
1815	Problems Collection (Volume X)		76	7.33
1838	Ticket to Ride		81	40.15
1839	The Bookcase	1	122	36.09
1842	Lineland Airport		32	18.87
1877	Enrich my purse		152	27.14
1880	Hanoi Calls		203	55.14
1962	Circles		57	19.46
1963	Image Projections		104	32.61
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	22.32