Sphere Online Judge (SPOJ)

list of classical problems

ID	NAME	QUALITY	USERS	ACC %	DIFFICULTY C I
7192	Integral Maximization	1	369	38.14	50 50
20931	Square-Free Product (Hard)	2	54	38.12	17 21
22560	Valid Path	5	60	38.11	4 7
2047	Stone Removing Game	-1	132	38.11
401	Translations		131	38.11	17 34
3495	The Nobel Thief		6	38.10
8845	Entertainment	1	48	38.10	34
12236	Cloud Computing		35	38.10
13382	Kindergarten Painting Competition		36	38.10
14819	Permutation Generator		27	38.10
15576	Aesthetic Text		15	38.10
101	Fishmonger	47	2290	38.08	17 20
142	Johnny and the Glue		104	38.08	17 17
11321	G-One Sort	5	773	38.08	13 17
8421	Fun With Inequalities		140	38.05	17 17
23737	Ogledala	1	21	38.04	34 17
10538	Derp		55	38.04
16138	Deconnecting		57	38.04	1 1
19143	TRISQRS		169	38.02	28 34
13829	Tjandra 19th birthday present (HARD)	2	36	38.02	39 23
7408	Camelot	2	62	38.01	17 17
25458	Boxes	4	96	38.00	38 38
19996	Moon Safari (medium)	4	74	38.00	30 34
135	Men at work	1	258	37.99	24 26
16758	Divisible by 6 and 9	-1	122	37.97	21 13
15577	Blockade	2	369	37.96	17 17
1964	Tree cut		146	37.95
12413	Toward Infinity		20	37.94
6556	N DIV PHI_N	14	733	37.94	5 26
3979	Whirligig number	7	1019	37.93	10 15
3381	Highways	77	4328	37.92	10 9
35956	Square Free Number	8	66	37.92	20 17
15736	Breaking String	17	703	37.90	16 28
19	The Bytelandian Cryptographer (Act III)	1	128	37.90	17 26
15038	Yell Classico	3	211	37.90	17 1
8333	Place-name game		69	37.88
13002	For Loops Challenge	2	277	37.87	34 17
8	Complete the Sequence!	32	4374	37.86	16 18
4586	Texas Trip		66	37.85
15636	Histology Assistant		8	37.84	17 17
21352	Avantgarde and Bicycle		22	37.84
37390	Colored Development	4	25	37.84	17 26
7102	Doing The Word Wrap	1	166	37.82
2715	Glasnici	2	315	37.81	23 34
3005	Subdividing a Land		24	37.80
48	Glass Beads	28	3358	37.80	15 18
17394	Bits Game		46	37.80	1 34
10071	Working at the Restaurant		32	37.78
14883	Box Factory		15	37.78
15498	Kawigi quote	1	24	37.78	34 34

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