Sphere Online Judge (SPOJ)

list of tutorial problems

ID	NAME	QUALITY	USERS	ACC %	DIFFICULTY C I
16579	Count the Pairs	31	1383	30.24	5 5
21565	Count the miscall		8	47.37
10495	Count Primes		101	35.25
32445	COUNT JUMPS	1	89	41.07	4 1
11034	Count inversions in a small array	1	266	31.05	1
8379	count frequency of digits		23	50.00
8380	COUNT ATTENDANCE		16	67.74
28010	Copy Cat		17	10.42
16088	Coprime Again Easy Version	2	44	33.57	17 34
4768	Cool Numbers		203	37.21
8060	Cookies Piles	4	4069	70.96	1 4
2524	Conversions	1	3113	48.20	6 1
25209	CONVERSIONS		4	15.15
3386	Contest System Quality Assurance Tester	3	1771	39.60	1 1
25146	Contamination	1	17	50.00	17 17
9339	Contains Prime		15	47.50
34406	Conta gli oggetti vecchi		66	46.21	1 1
22795	Consecutive Numbers		21	54.65
20340	Connectivity	2	305	37.21	12 12
19956	Connecting Networks		10	21.15
34398	Congruent primes	1	6	37.84	17 17
17395	Computer Graphics		13	68.18
26775	Compute The Computation		9	41.10
19431	COMPRESSED WORDS-2		7	29.63
14013	Complete Binary Tree		197	32.67	1 1
4074	Compile Error		221	58.35	9 1
14439	Compete or Not	1	1	4.23
8266	Compare The Strings		98	52.67
25976	Community		7	27.78
17246	Come on, it is just a power of two!		31	27.87
11821	Combinatorial Sequence	1	28	59.65	1 50
22794	Combination Lock		23	88.46
2134	Colorful Cubes		2	22.22
8493	Colorful Blocks		191	58.04
15302	Color The Big Wall		11	37.84
27271	Collecting Coins	4	157	13.48	9 20
32045	Coin Game		168	91.39
15781	Coder Express Le!!		51	48.41
15785	Coder Express 5!!	1	8	65.52
15782	Coder Express 2!!	1	28	52.38
12466	Closest Points		82	58.10	17 1
15624	Close to Zero		8	23.88
2018	Clique Separation		71	40.44
8413	Clean the Forum Posts		436	48.64
41254	Clean Robot		7	50.00
35005	Classic Sequence Sum	4	43	50.91	27 14
20040	Circle Hazard-1		18	71.43
6528	Circle Counting		47	49.02	1 1
37314	Chuỗi đối xứng 3		6	38.10
37313	Chuỗi đối xứng 2		10	42.86

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