Sphere Online Judge (SPOJ)

list of classical problems

ID	NAME	CODE	USERS	ACC %
6340	ZUMA	ZUMA	4	100.00
6322	The hunt for Gollum	ARDA1	19	48.19
6299	Move Marbles	MOVMRBL	1	5.56
6285	Another Game With Numbers	NGM2	29	44.74
6264	Rank of a Fraction	FNRANK	11	42.11
6256	Inversion Count	INVCNT	58	47.88
6236	Matches	FERT21_0	56	30.42
6221	Increasing Powers of K	INCPOWK	46	29.89
6219	Edit distance	EDIST	76	45.06
6187	Jane and Tarzan	JANE	27	29.79
6072	Chocolate	SOCOLA	22	26.03
6059	Another GCD problem	GCDSQF	61	52.17
6052	PBCGAME	PBCGAME	22	46.48
6044	Minimum Diameter Circle	QCJ4	32	21.67
6043	The Game	QCJ3	46	33.33
6042	Another Box Problem	QCJ2	82	44.95
6041	Mountain Walking	QCJ1	124	48.25
6035	Dinner	DINGRP	15	20.83
5980	Matrix Game	MATGAME	36	40.31
5979	Yet Another Permutations Problem	YAPP	97	57.10
5978	Frequent Prime Ranges	FRQPRIME	70	33.70
5977	Weird Function	WEIRDFN	32	17.84
5976	Traversing Grid	TRGRID	194	59.06
5975	Travelling Knight	TRKNIGHT	14	39.68
5973	Selecting Teams	SELTEAM	24	35.19
5972	Maximum Sum Sequences	MAXSUMSQ	58	30.00
5971	LCM Sum	LCMSUM	24	20.00
5970	Finding Primes	FINDPRM	51	22.10
5969	Finding Maximum	FINDMAX	22	32.61
5917	Factorial length	LENGFACT	136	33.57
5911	Square-free Integers Factorization	SQFFACT	2	20.00
5902	Tri	CEOI09TR	9	26.92
5885	Troops of Sand Monsters	TROOPS	12	38.46
5833	XOR Rounds	XORROUND	45	33.84
5832	AND Rounds	ANDROUND	82	25.17
5831	Permutation Jumping	PERMJUMP	37	63.64
5830	Alternating Permutations	ALTPERM	16	63.16
5732	Paradox	PARADOX	41	45.04
5725	123 Sequence	KSEQ	36	22.68
5703	Primes of Lambda	LPRIME	8	25.49
5699	The last digit re-visited	LASTDIG2	270	34.85
5676	STONE GAME	RESN04	274	84.12
5673	Fractions on Tree ( reloaded !)	NG1FRCTN	94	37.50
5652	Snow White and the N dwarfs	PATULJCI	50	33.78
5640	Fractions on Tree	NG0FRCTN	192	65.33
5638	Mobile Service Hard	SERVICEH	8	23.68
5637	LL and ErBao	ISUN1	2	28.57
5566	Math with Bases	BSMATH2	2	6.06
5542	Counting pairs	CPAIR	21	17.27
5541	Sequoiadendron	SEQUOIA	29	57.14