Sphere Online Judge (SPOJ)

list of classical problems

ID	NAME	QUALITY	USERS	ACC %	DIFFICULTY C I
2323	Broken Compass		41	13.43
4574	Riding in cycles		41	24.31
5103	Top 10		41	16.26
5156	Flowers Placement		41	31.06
6819	Yet Another Assignment Problem	1	41	11.56	1
6851	Fence		41	26.52
8586	Factorial factorisation	2	41	19.05	17 17
9447	Genetics		41	35.29
10075	Haunted Graveyard	2	41	19.47	26 26
11474	Totient Game		41	36.67
12371	High Mountains		41	17.20	34 34
16240	Easy Password		41	5.09	17 26
16389	Play with Strings	1	41	21.81	17 34
17944	Mickey Mouse Magic Trick v4	1	41	56.41	1 34
21414	Count The Indexes 2	5	41	18.11	37 24
22552	Flow on Tree		41	40.30
25384	Shuffles	2	41	53.47	1 17
25476	Induced favoritism	1	41	29.23	17 34
25482	Kimetto Kipsang and Kipchoge	1	41	20.71	34 34
26746	Gears	4	41	30.13	21 17
30349	Strange Waca	9	41	19.88	17 22
34648	Seven	5	41	49.61	11 21
34975	Prime Friendly Numbers	10	41	19.33	28 26
36529	Challenge Accepted!	1	41	27.07	17 17
36537	Koala Fan	8	41	23.48	13 10
1471	A Game of Pearls	1	40	30.17	17 17
2023	One Instruction Computer Simulator		40	9.77	42 42
2413	Building Beacons		40	32.58
3361	Cavli	1	40	44.87	17 17
3373	Permutation Code		40	54.43
4003	Subway planning		40	17.94
4275	rotate it		40	55.70
4324	The fate of the pineapple		40	28.41
5153	Compressed String		40	30.00
5155	Exciting Time		40	13.06
5160	Jinyuetuan Puzzle		40	36.69
6711	Transform a Sequence		40	45.65
8651	Alien arithmetic	1	40	18.81
8734	Charlie and the Chocolate Factory	1	40	17.65	26 34
8795	Twenty Questions	1	40	20.65
8820	Okret	3	40	19.32	39 34
9860	The Glazier 2	1	40	65.75	17 34
9893	Smoking gun		40	27.98
9940	Fruit Ninja		40	27.40
11905	Tree Count		40	43.07
11921	Ball Stack	1	40	54.63	17 17
12808	Yet-Yet Another Counting Problem	1	40	66.67
14858	digit count		40	23.69
16639	Endless Knight		40	23.50
19153	Rooted Trees	1	40	21.43

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