Sphere Online Judge (SPOJ)

list of classical problems

ID	NAME	QUALITY	USERS	ACC %	DIFFICULTY C I
36537	Koala Fan	8	40	23.28	13 10
2023	One Instruction Computer Simulator		41	11.22	42 42
2323	Broken Compass		41	13.42
3373	Permutation Code		41	55.70
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
8586	Factorial factorisation	2	41	19.05	17 17
9447	Genetics		41	35.29
10075	Haunted Graveyard	2	41	19.47	26 26
12371	High Mountains		41	17.20	34 34
12887	Ant Colony Optimization		41	64.29
16240	Easy Password		41	5.09	17 26
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	47.12
26746	Gears	4	41	30.13	21 17
518	Zig-Zag Permutation	1	42	31.02	26 26
1505	Whac-a-Mole	2	42	15.87	50 17
2202	Tan and His Interesting Game		42	23.76
5469	Houses		42	26.72	34 26
6851	Fence		42	27.07
8661	Bogosort		42	14.33
10106	Coin Collecting		42	39.64
12893	Short Select	1	42	41.55
14751	Self Descriptive Number		42	57.29
15244	Davids Quest	2	42	55.37	26 17
15541	Simplified Hangul	4	42	54.00	17 13
18667	Product of factorials (hard)	3	42	26.61	28 34
20562	Tracy and Charlie	1	42	56.47	17 34
21672	Frustrated CR and His Class	3	42	29.17	17 17
21963	Flowery Trails	3	42	41.79	17 13
22740	Another Valentine Maze Game (1D)	4	42	47.33	5 21
25959	Next Lexicographically Greater Substring	4	42	21.46	23 23
26790	Stockade	2	42	42.74	17 17
28413	Ada and Fence	6	42	26.98	15 17
33906	Ada and Sets	2	42	55.73	17 17
38365	Asacoco Prescription	2	42	18.25	17 26
41507	GCD Product Sum	6	42	33.51	6 23
280	Lifts		43	17.38	17 1
407	Random Number		43	27.93	17 17
418	Necklace		43	16.76
1672	The Great Indian Wedding		43	22.58
2138	Pibonacci	3	43	14.58	26 39
6832	To Score or not to score		43	28.16
7629	Building Ports		43	13.48
8317	Red Balls		43	44.84
8461	Adventure in Moving		43	27.98
10376	String Factorization!	1	43	10.98	26 42

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