Sphere Online Judge (SPOJ)

list of tutorial problems

ID	NAME	QUALITY	USERS	ACC %	DIFFICULTY C I
29692	Inside or outside?		215	27.71	17 11
29747	Lucky 7, Unlucky 13	3	79	42.15	6 6
29748	Robin Hood		31	40.00	1 1
29749	Hidden Couple		334	31.76	1 1
30409	Generalized Fibonacci		101	13.27	17 17
30623	PRIME HEIGHT		0	0.00
30668	SOME MYSTERY HAPPENED		14	19.28
30753	Ada and Economy	4	116	27.81	1 4
30784	Ada and Pear		9	10.64
30829	ARE YOU GOOD IN MATHS?	7	267	32.08	11 10
30831	Easy Stack	3	1619	23.65	3 3
30832	Easy Queue	5	1527	26.87	1 1
30840	Ada and Database		17	39.39	17 17
30847	Traversing Tree		117	21.27
30891	Sản xuất		0	0.00
30907	Easy Fibonacci	5	568	14.37	9 8
31066	Number Breaking	10	761	30.65	13 12
31138	Just Sum	-1	8	13.19
31182	Sub array Sum1	-1	91	34.34	1 17
31183	Sub array Sum2	3	41	16.12	34 17
31283	Count The Players		49	25.87
31288	Too Late		55	8.62	1 17
31934	Last Digit of Power	5	77	20.40	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	69.44	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	90	41.33	4 1
32447	How many are placed at last positions	1	34	86.06	1 17
32470	Make Versions in Segment Tree	16	393	45.05	14 14
32684	Calculator		0	0.00
32685	Calculator		226	94.00	17 1
33305	Single Source Shortest Path		197	20.08	17 1
33329	Finding Max	1	14	82.76	1 1
33792	String	1	20	7.34
33796	Print String		45	25.68
33836	Floor Arithmetics	1	8	44.12	17 17
34008	Base and Power	2	113	28.73	17 9
34010	Friendship	5	181	52.73	1 1
34095	Arithmetic Operations		76	75.40
34097	Sequence		0	0.00

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