Sphere Online Judge (SPOJ)

list of tutorial problems

ID	NAME	QUALITY	USERS	ACC %	DIFFICULTY C I
11239	Number Theory (Easy)	2	95	37.05	17 26
11852	Power with Combinatorics(EASY)	3	90	23.43	26 26
13082	BINARY CHALLENGE	3	287	32.24	17 26
18508	The Factorial Conundrum	2	6	17.44	34 26
21099	Palindrome Query	2	30	49.57	9 26
25725	DB & GCD	2	152	67.16	1 26
26496	Recursive World!!!		100	38.27	15 26
28641	Finding true twins	4	72	54.03	21 26
11100	Fun with Fibonacci Series	5	308	19.20	21 27
2625	Problems Collection (Volume 3)	3	119	34.56	42 34
7272	Take Away Game	1	120	18.64	17 34
8444	Problem 5	1	242	40.25	34 34
8621	Prime Permutations (easy)	1	133	56.95	1 34
8650	Grid painting	1	14	20.97	34 34
11936	FIBO BIT	1	23	39.05	1 34
12276	Subset and upset	1	69	54.20	1 34
13501	Guardian and The Deck of Cards	1	77	29.84	17 34
14131	Omitting Redundancy	2	16	32.08	17 34
14721	Knives Are Better	1	21	40.38	34 34
16088	Coprime Again Easy Version	2	48	32.88	17 34
16239	Horrible Problem	1	467	40.25	1 34
16637	Non-Square Free Numbers	1	25	27.68	1 34
18035	Aya the new contestant	-2	6	18.52	17 34
18705	Student Chains	2	615	27.17	1 34
21392	Prana and The Series	1	45	19.13	17 34
21648	LCM Sum(Hard)		28	22.92	17 34
26556	Pair Divisible	2	37	23.50	34 34
34170	CHT Practice	3	59	22.53	17 34
34416	Euler Totient of factorized integer	2	13	53.66	17 34
13883	ZEROES IN RANGE	2	60	19.49	26 42
1415	Problems Collection (Volume 2)	-1	204	36.14	50 50
9465	Spectrum of colours	-1	56	65.81	50 50
11821	Combinatorial Sequence	1	32	48.10	1 50
14107	Problem 4	-1	46	79.71	50 50
244	Internally Stable Sets		92	17.73
361	Bottom Coder (Hard)		108	24.45
490	Armies		325	31.40
491	The Cursed Room		159	36.87
509	6-Kolorowanie Grafów Planarnych		85	20.52
527	Just for Fun (Easy)		108	8.18
644	Byteland Money Exchange		21	32.18
1118	Snowman		559	33.73
1239	Recurrence Equation Finder		23	70.45
1394	Dividing Spaces		25	66.67
1474	Charge		21	32.89
1679	Annoying painting tool		105	62.79
1756	Find The Determinant		175	34.93
1872	Making Book		816	29.03
2018	Clique Separation		77	42.35
2020	Painting Points		145	49.85

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