Sphere Online Judge (SPOJ)

list of tutorial problems

ID	NAME	QUALITY	USERS	ACC %	DIFFICULTY C I
29692	Inside or outside?		226	27.84	17 11
29747	Lucky 7, Unlucky 13	3	79	42.15	6 6
29748	Robin Hood		37	45.45	1 1
29749	Hidden Couple		360	31.57	1 1
30409	Generalized Fibonacci		103	13.42	17 17
30623	PRIME HEIGHT		0	0.00
30668	SOME MYSTERY HAPPENED		15	20.24
30753	Ada and Economy	5	120	28.48	1 4
30784	Ada and Pear		9	10.78
30829	ARE YOU GOOD IN MATHS?	7	269	32.35	11 10
30831	Easy Stack	3	1694	23.63	3 3
30832	Easy Queue	6	1651	27.05	1 1
30840	Ada and Database		21	38.37	17 17
30847	Traversing Tree		118	21.26
30891	Sản xuất		0	0.00
30907	Easy Fibonacci	5	585	14.57	9 8
31066	Number Breaking	10	845	32.39	13 12
31138	Just Sum	-1	9	13.68
31182	Sub array Sum1	-1	92	33.83	1 17
31183	Sub array Sum2	3	42	15.92	34 17
31283	Count The Players		49	25.87
31288	Too Late		55	8.62	1 17
31934	Last Digit of Power	5	80	20.77	6 3
31939	FFT and inverse FFT		136	23.76
32013	Red-Black Trees		177	85.85
32045	Coin Game		168	91.39
32046	Knapsack Problem	1	148	90.96	1 1
32047	Optimal BST		132	92.27
32048	Largest bunch of zeros		157	93.35
32073	The Permutation Game	4	31	64.10	17 23
32105	Maybe a Minimum Spanning Tree		122	91.04
32106	Simple Dijkstras algorithm		130	92.41
32107	Simple Dijkstras algorithm again	1	124	95.72	1 1
32108	Lexicographic Permutations	1	133	93.01
32109	Relaying the roads		133	95.99
32260	Implement FFT and its inverse	1	224	23.15
32445	COUNT JUMPS	1	92	41.63	4 1
32447	How many are placed at last positions	1	37	86.31	1 17
32470	Make Versions in Segment Tree	16	402	45.25	14 14
32684	Calculator		0	0.00
32685	Calculator		229	94.01	17 1
33305	Single Source Shortest Path		197	20.08	17 1
33329	Finding Max	1	19	84.85	1 1
33792	String	1	20	7.10
33796	Print String		45	25.68
33836	Floor Arithmetics	1	11	39.39	17 17
34008	Base and Power	2	115	29.05	17 9
34010	Friendship	5	184	52.83	1 1
34095	Arithmetic Operations		76	75.40
34097	Sequence		0	0.00

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