Sphere Online Judge (SPOJ)

list of tutorial problems

ID	NAME	QUALITY	USERS	ACC %	DIFFICULTY C I
13952	THE WEIRD STAIRCASE	11	463	27.26	12 9
13995	Missing Number	2	137	27.72	17 1
14013	Complete Binary Tree		197	32.67	1 1
14014	Day of Pay	2	200	24.02	1 6
14020	Happy Birthday !!!		128	24.58	1 1
14036	Spring Iceblocks	1	16	98.00
14037	Late Summer Battle		2	100.00
14038	Autumn Leaves (Easy)		12	90.48
14039	Summer Play		14	97.06
14040	Winter Shopping		19	89.36
14051	Teddy Bear Picnic	1	62	38.62
14087	Good Arrays		21	66.67
14088	Very Tasty Meals		21	26.19
14089	Longest Smiley Face		25	60.00	1 1
14090	Moving the dog around		34	48.35
14091	Mighty Powers		57	55.97
14115	Eating Puzzle	-1	30	24.00
14116	Funky Strings	1	14	36.59
14118	Amusing Digits	3	129	46.57	6 6
14119	Factorial Sum	1	55	54.55
14120	LED Board		16	27.68
14121	Save the girlfriend		10	13.83
14124	S Number		58	48.87
14131	Omitting Redundancy	2	11	23.53	17 34
14135	Right Triangle		45	27.84
14157	Cut Stick	5	400	38.02	9 13
14199	Prime Summation		9	56.52
14204	Greatest Common Divisor		12	61.90
14205	Big Fibonacci		12	57.69
14206	Graph Cycle Detection	2	79	17.31	26 9
14217	Longest Maze Path		1	16.67
14218	Grid Search		1	20.00
14221	Subwords	1	9	24.56
14297	Power of Phi		44	25.97	1 1
14335	Vowels		36	31.06
14336	Packing Boxes	-1	11	24.56
14337	Luhn Algorithm		30	42.17
14394	Mario meets princess Peach		11	25.76
14437	Alphabetic Relation	1	47	31.08	1 1
14442	Three Circle Problem (MEDIUM)		29	32.38
14506	Bitogoras Number	1	34	34.06	17 17
14527	Mandatory Attendance		6	66.67
14558	Tic-tac-toe		7	63.16
14667	The Invasion	-1	23	43.37
14669	First Blood		47	34.57
14670	The Revelations	1	69	54.01	1 17
14671	Bombing Run		27	28.28
14672	Freedom!		121	52.31
14720	Check Of Potential		20	61.54
14721	Knives Are Better	1	16	37.50	34 34