Sphere Online Judge (SPOJ)

list of tutorial problems (unsolved)

ID	NAME	QUALITY	USERS	ACC %	DIFFICULTY C I
1756	Find The Determinant		175	34.93
1729	Guess the Number	3	996	19.13	1 1
1682	Deli Deli	1	393	51.52	17 17
1680	Black and white painting	1	168	57.53	9 9
1679	Annoying painting tool		105	62.79
1474	Charge		21	32.89
1428	Easy sudoku	6	913	36.22	22 13
1417	University Employees	-1	2481	65.79	1 1
1415	Problems Collection (Volume 2)	-1	204	36.14	50 50
1397	Put Them on a Circle	1	121	33.81	1 17
1394	Dividing Spaces		25	66.67
1393	Ping Pong Probability	2	242	52.12	1 17
1392	Sum of Factors	2	346	13.45	1 1
1282	How many Islands	4	587	34.84	6 12
1279	Run Length Decoding		88	36.81	1 1
1239	Recurrence Equation Finder		23	70.45
1238	Special Nim Game		396	55.37	11 11
1118	Snowman		559	33.73
1023	Arranging Dominoes	1	676	41.30	1 1
851	Tickets lottery	1	484	48.14	1 1
762	Problems Collection (Volume 1)	1	154	48.09	1 17
752	Power it!	11	434	58.48	17 17
732	Johnsons Algorithm	2	90	47.91	17 9
692	Fruit Farm		243	27.39	17 17
691	Hotel Floors	3	646	34.56	9 9
644	Byteland Money Exchange		21	32.18
536	How many Fibs	1	593	25.05	1 1
527	Just for Fun (Easy)		108	8.18
511	Easy Sorting	1	1867	40.10	4 4
509	6-Kolorowanie Grafów Planarnych		85	20.52
500	Turbo Sort	10	5308	38.32	7 5
491	The Cursed Room		159	36.87
490	Armies		325	31.40
453	Sums in a Triangle (tutorial)	8	1800	42.94	14 12
450	Enormous Input Test	36	11683	58.54	5 3
442	Searching the Graph	4	1177	29.66	5 1
440	The Turtle´s Shortest Path	7	1924	36.46	17 9
439	Not So Fast Multiplication	2	1550	24.88	12 12
361	Bottom Coder (Hard)		108	24.45
360	Bottom Coder (Easy)	11	3784	34.28	4 9
244	Internally Stable Sets		92	17.73
74	Divisor Summation	94	16795	21.54	7 10