Sphere Online Judge (SPOJ)

list of classical problems

ID	NAME	QUALITY	USERS	ACC %	DIFFICULTY C I
9721	2s Complement	1	173	31.83	34 34
9725	Queens on a Board	2	51	50.00	34 34
9748	Palindromes	1	91	29.27	34 34
9751	Repairing Roads	1	21	11.34	17 34
9860	The Glazier 2	1	38	66.67	17 34
9887	Binomial coefficients	1	154	26.64	34 34
9892	Pool construction	1	90	56.90	1 34
9916	Help Dr Whooves	2	54	51.28	17 34
9934	Alice and Bob	1	145	33.39	1 34
9941	GRE Words	2	109	20.48	34 34
9964	Fibonacci vs Polynomial	6	126	40.67	24 34
9975	No Stories Any More!	1	46	29.02	34 34
9985	Distance	2	61	24.14	42 34
10072	Lights	1	60	47.17	17 34
10236	Generations	1	54	19.35	34 34
10377	project groups		128	50.70	34 34
10438	Crazy texting	2	172	25.78	26 34
10439	Walking Robot		110	46.11	34 34
10453	Spring Loaded	-2	157	31.09	17 34
10547	Delivery Route	5	50	19.68	34 34
10572	Cheating on the contest	1	24	6.04	17 34
10605	Counting Formations	2	14	56.41	34 34
10612	Funny Areas	3	89	32.79	34 34
10699	Symmetry	1	26	36.63	17 34
10704	The Great Escape	1	33	28.73	34 34
10931	Online Bridge Searching	4	92	35.22	34 34
11267	Arnook Defensive Line	1	38	27.57	34 34
11274	Lights and Switches	1	56	32.68	17 34
11334	Lucifer Sort		7	7.17	34
11345	lcm addition	2	69	31.01	34 34
11414	Combat on a tree	2	233	30.08	30 34
11469	Balanced Cow Subsets	6	369	24.06	37 34
11575	A Famous Equation	2	73	27.13	34 34
11707	Wrong directions	2	45	31.05	39 34
11830	DOJO Corridor I	-1	28	39.93	50 34
11834	DOJO Corridor II	2	21	33.54	42 34
11901	Paths in a Tree	1	18	32.14	1 34
11946	Zig-Zag Permutation 2	1	5	39.29	26 34
12007	Fibonaccibonacci (easy)	1	105	29.55	1 34
12009	Fibonacci recursive sequences (hard)	2	23	9.67	34 34
12107	All Possible Barns	1	32	27.89	34 34
12370	Generating Alien DNA	1	31	18.18	34 34
12371	High Mountains		41	17.20	34 34
12436	The One-Dimensional Pool Table	1	57	40.23	1 34
12562	Glory War	2	33	35.20	34 34
12609	Different Vectors	3	43	42.17	26 34
12749	Dynamic Assignment Problem	1	12	56.63	34 34
12855	Teleport		4	14.63	17 34
12908	Binary Matrix	1	14	8.29	39 34
13031	Vision Field		27	23.89	34 34

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