Sphere Online Judge (SPOJ)

list of classical problems

ID	NAME	QUALITY	USERS	ACC %	DIFFICULTY C I
34501	Divisible Strings	5	210	28.40	15 17
20172	Divisiblity by 3	11	581	30.56	14 10
10186	Divisor Digits	6	1279	30.91	8 12
25862	Divisor Game	5	50	20.93	17 17
1754	Divisor Summation (Hard)	31	1132	15.49	22 21
7567	Divisor Summation Powered	13	359	21.17	17 23
526	Divisors	37	1682	43.59	14 13
16825	Divisors	5	86	17.54	21 26
530	Divisors 2	10	905	52.48	12 16
22403	Divisors of factorial	71	1910	29.71	14 14
22549	Divisors of factorial (extreme)	5	72	26.26	34 34
22412	Divisors of factorial (hard)	9	158	47.63	22 22
7623	Divisors VI	2	23	14.84	34 34
26527	DIVSEQ	16	227	46.61	13 17
10930	Dixon Dominoes	1	17	24.44	1 1
13105	DNA	5	639	36.87	11 24
1776	DNA Laboratory	3	108	11.19	34 23
35277	DNA of Elf	2	12	25.56	17 34
3408	DNA Sequences	47	1979	26.18	16 20
866	DNA Translation		117	21.59
25393	Do It Wrong, Get It Right	6	54	36.82	17 17
15551	Do You Even Lift	2	18	38.35	23 28
7102	Doing The Word Wrap	1	166	37.82
11830	DOJO Corridor I		27	41.43
11834	DOJO Corridor II	1	20	33.76	34 34
23742	Dolan and Nephews	5	48	42.42	30 27
9761	Dolls	2	103	33.42	17 26
11984	Dome of Circus		17	48.39
11521	Dominant Strings		71	34.51
4157	Domino	4	54	50.42	42 42
25819	DOMINO	1	18	29.58	34 34
27521	Domino's effect	1	13	41.18	1 9
4197	Dominoes	4	120	23.01	23 23
11895	DONALDO	7	505	24.81	11 13
3195	Doors and Penguins	9	238	27.22	19 16
20635	Dortmund Dilemma	1	19	45.45	17 34
8105	Dot Product Maximization	3	71	17.33	17 17
10286	DOTA HEROES	44	6025	45.00	3 5
3388	Double Near Palindromes	1	447	33.95	17 17
4203	Double Queue	1	75	43.50	17 17
5182	Double Sorting		12	8.92
8894	Double Time	1	31	47.62	17 1
903	Double Vision		64	56.49
3322	Doubled Numbers	2	163	48.13	17 17
10415	Dracula	6	140	21.71	20 22
1876	Dragon Curves	2	174	50.12	1 17
12961	Drastic Grapes		36	32.24
12559	Drastic Race		49	35.67
7210	Draw Mountains	5	329	43.83	17 6
19320	Draw Skyline Graph	2	102	19.57	31 26

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