Sphere Online Judge (SPOJ)

list of tutorial problems

ID	NAME	QUALITY	USERS	ACC %	DIFFICULTY C I
74	Divisor Summation	54	11677	22.13	7 10
244	Internally Stable Sets		85	18.07
360	Bottom Coder (Easy)	8	3659	35.06	1 8
361	Bottom Coder (Hard)		108	24.68
439	Not So Fast Multiplication	1	1356	25.33	1 1
440	The Turtle´s Shortest Path	7	1804	36.89	17 10
442	Searching the Graph	3	865	32.88	6 1
450	Enormous Input Test	29	7218	57.93	6 4
453	Sums in a Triangle (tutorial)	4	1325	44.02	13 13
490	Armies		301	31.49
491	The Cursed Room		149	37.19
500	Turbo Sort	8	4668	39.38	7 6
509	6-Kolorowanie Grafów Planarnych		81	20.68
511	Easy Sorting		1527	45.16	1 5
527	Just for Fun (Easy)		87	8.05
536	How many Fibs		536	26.73
644	Byteland Money Exchange		14	27.63
691	Hotel Floors	1	458	41.74	1 17
692	Fruit Farm		231	26.82	17 17
732	Johnsons Algorithm	1	29	41.28	17 17
752	Power it!	10	337	58.25	17 19
762	Problems Collection (Volume 1)		136	52.75
851	Tickets lottery	1	287	45.45	1 1
1023	Arranging Dominoes	1	658	40.82	1 1
1118	Snowman		529	33.04
1238	Special Nim Game		235	64.40	9 13
1239	Recurrence Equation Finder		16	68.75
1279	Run Length Decoding		81	38.41	1 1
1282	How many Islands	3	470	36.23	6 12
1392	Sum of Factors		302	14.41
1393	Ping Pong Probability	1	234	52.39	1 17
1394	Dividing Spaces		16	62.96
1397	Put Them on a Circle	1	92	30.84	1 17
1415	Problems Collection (Volume 2)		107	47.32	50 50
1417	University Employees	-1	2441	65.85	1 1
1428	Easy sudoku	4	619	34.36	30 17
1474	Charge		21	43.10
1679	Annoying painting tool		101	63.59
1680	Black and white painting		150	59.13	1 1
1682	Deli Deli		337	52.82
1729	Guess the Number	1	916	18.96
1756	Find The Determinant		166	35.39
1872	Making Book		799	28.87
2018	Clique Separation		67	39.77
2020	Painting Points		140	49.40
2122	Billboard		15	34.69
2126	Panel		22	16.49
2134	Colorful Cubes		2	36.36
2155	Jamcode 2006 (Easy)		123	45.13
2156	Jamcode 2006 (Hard)		22	51.11

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