Sphere Online Judge (SPOJ)

list of classical problems

ID	NAME	QUALITY	USERS	ACC %	DIFFICULTY C I
10800	GAME		21	12.64
12210	High and Low		61	12.63
13420	Fimodacci	3	35	12.58	12 26
13529	Special Graph	4	80	12.57	37 30
146	Fast Multiplication Again		36	12.50
8265	Zero Count		14	12.50
34353	Smelly Toilets	1	6	12.50
36712	Trailing digits	7	62	12.50	13 13
1687	Logic II	1	24	12.45	34 34
1965	Set Cover	2	25	12.42	1 17
11180	369 Numbers	17	777	12.41	26 24
9520	Tanks	1	14	12.41	34 34
684	Another Assignment Problem	1	103	12.40	34 1
149	Fencing in the Sheep	3	94	12.36	34 17
9691	Triangles and Quadrangle		14	12.32
3492	Braille Transcription	-1	10	12.32
404	Scanner		56	12.24
25803	Help BTW	3	127	12.20	17 26
6	Simple Arithmetics	11	3028	12.20	30 9
2855	Forest		57	12.20
17402	Joy of Arbitrage	1	13	12.20	50 34
202	Rockets	-1	56	12.18	34 34
19899	Middle Earth	2	46	12.14	26 17
32577	Ada and Terramorphing	10	244	12.13	31 23
7409	Drawing Quadrilaterals		51	12.12
115	Family	2	72	12.10	28 28
13156	Tom and Jerry		26	12.09
28465	Koalas	1	13	12.08	34 17
25818	NEKAMELEONI		11	12.06
2733	K Equal Digits		10	11.96
4882	Counting in a DAG	6	170	11.96	17 26
28287	Mayonnaise Arrow	3	32	11.93	26 13
17779	Charlie and the Chocolate Factory		4	11.90
25471	AM FM	2	37	11.87	17 34
9	Direct Visibility	4	255	11.82	30 21
17624	Cooperation in geometry !		20	11.79
26663	Theater shade in Berland	1	25	11.78	34 17
3578	Hashing	1	39	11.76	34 34
9458	Ghosts having fun	7	205	11.74	16 23
1269	CN Tower (Hard)		23	11.74	34 34
1678	Royal Treasury		70	11.71
389	Use of Hospital Facilities	1	50	11.68	34 26
7489	Slow Growing Bacteria	1	82	11.67	17 34
25338	Eefun Plays LOL	4	52	11.57	26 34
6819	Yet Another Assignment Problem	1	41	11.56	1
23538	Carina	2	17	11.50	34 17
10539	Bunnies	2	34	11.46	17 17
37476	Personal LCM	4	35	11.46	21 30
4881	Words on graphs		103	11.39	34
1671	Another Mathematical Problem		61	11.37

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