Sphere Online Judge (SPOJ)

list of tutorial problems

ID	NAME	QUALITY	USERS	ACC %	DIFFICULTY C I
14868	SERVERS	1	352	55.15	1 17
14867	PAIRS	1	57	59.15	17 17
14854	Bribe the Prisoners(Easy)		10	20.00
14818	Team Queue		31	25.81
14817	Add and Multiply		50	25.69
14816	Easy Wavy Routes		30	24.46
14776	Find Right Triangle	1	79	29.25	1 1
14775	Sum of Powers		22	33.55
14752	FIZZBUZZ (Easy)		110	59.14
14749	Omar’s Training I		30	43.30
14746	Fibonacci Easy		146	47.37
14745	Reverse	1	427	44.80	1 1
14744	Beautiful Numbers	1	500	57.59	9 9
14743	Derivation Sequence		60	51.80
14741	Truckloads	2	592	47.42	1 1
14740	Easy!!!		49	50.46
14739	Hard to solve		246	63.25	1 1
14737	Hello Recursion	3	1538	41.89	11 11
14721	Knives Are Better	1	21	40.38	34 34
14720	Check Of Potential		22	62.50
14672	Freedom!		126	52.76
14671	Bombing Run		29	26.32
14670	The Revelations	1	73	55.32	1 17
14669	First Blood		51	35.67
14667	The Invasion	-1	27	41.94
14558	Tic-tac-toe		8	33.33
14527	Mandatory Attendance		13	82.61
14523	Geeky Retards		4	31.82
14506	Bitogoras Number	1	45	33.71	17 17
14442	Three Circle Problem (MEDIUM)		34	31.49
14439	Compete or Not	1	6	10.13
14437	Alphabetic Relation	1	51	30.97	1 1
14394	Mario meets princess Peach		13	41.67
14337	Luhn Algorithm		31	41.46
14336	Packing Boxes	-1	15	27.54
14335	Vowels		38	30.66
14297	Power of Phi		47	25.86	1 1
14221	Subwords	1	12	27.54
14218	Grid Search		4	50.00
14217	Longest Maze Path	1	8	32.00
14206	Graph Cycle Detection	2	87	17.53	26 9
14205	Big Fibonacci		14	56.25
14204	Greatest Common Divisor		17	58.62
14199	Prime Summation		14	65.52
14167	Sight Logic		1	0.28
14157	Cut Stick	6	453	37.38	8 11
14135	Right Triangle		45	28.06
14131	Omitting Redundancy	2	16	32.08	17 34
14124	S Number		62	50.00
14121	Save the girlfriend		11	10.29