Problems

	Submissions				Users
Name	Total	Acc.	Ratio	Fastest	Total	Acc.	Ratio	Difficulty
A Rational Sequence	1712	564	33%	0.00	592	436	74%	4.6
A Rational Sequence 2	2079	1534	74%	0.00	1370	1311	96%	1.5
A Rational Sequence (Take 3)	859	696	81%	0.00	578	553	96%	1.8
Arbitrage?	2307	561	24%	0.02	368	311	85%	3.3
Arcade!	1265	229	18%	0.01	223	158	71%	5.9
Arctic Network	1563	562	36%	0.00	498	399	80%	4.5
A Real Challenge	8049	3895	48%	0.00	3686	3450	94%	1.6
Area of Effect	168	13	8%	1.93	27	11	41%	8.8
Are You Listening?	1535	435	28%	0.00	403	354	88%	2.9
Arithmetic	2991	858	29%	0.00	886	684	77%	3.6
Army Strength (Easy)	3583	1802	50%	0.00	1679	1505	90%	2.2
Army Strength (Hard)	4056	2080	51%	0.01	1545	1381	89%	2.3
Around and Around We Go	53	15	28%	0.00	26	14	54%	7.6
Around the track	65	17	26%	0.01	26	14	54%	7.2
Around the Track	274	35	13%	0.00	55	25	45%	8.7
A Royal Problem	23	6	26%	0.73	5	3	60%	7.1
Arranging Hat	346	122	35%	0.05	117	100	85%	4.7
Arranging Wine	285	82	29%	0.03	91	64	70%	4.6
Arriving on Time	400	115	29%	0.04	95	74	78%	6.9
Artur	392	87	22%	0.01	96	67	70%	5.7
Artwork	1042	372	36%	0.06	346	231	67%	6.2
A Safe Bet	302	94	31%	0.15	84	57	68%	6.9
Ascending Photo	801	115	14%	0.04	189	74	39%	8.3
ASCII Addition	1100	589	54%	0.00	497	466	94%	2.0
ASCII Figure Rotation	1846	580	31%	0.00	602	506	84%	3.5
As Easy as CAB	953	68	7%	0.00	216	52	24%	9.4
Ask Marilyn	789	88	11%	0.01	93	66	71%	4.7
Aspen Avenue	1113	368	33%	0.00	273	183	67%	7.2
Assassins	265	94	35%	0.03	83	58	70%	6.4
Assembly Line	151	57	38%	0.90	55	41	75%	6.0
Assigning Workstations	6394	1436	22%	0.05	1073	911	85%	3.6
Assistant Ranking	75	11	15%	0.09	22	9	41%	8.6
Association for Computing Machinery	2511	950	38%	0.00	885	774	87%	2.6
Association for Control Over Minds	1539	471	31%	0.03	465	376	81%	4.8
Association for Convex Main Office	641	155	24%	0.05	171	128	75%	6.5
Association for Cool Machineries (Part 1)	1039	173	17%	0.04	223	138	62%	7.2
Association for Cool Machineries (Part 2)	46	27	59%	0.00	31	24	77%	5.7
Association for the Country of Mububa	1777	350	20%	0.00	423	265	63%	7.0
Association of Camera Makers	212	20	9%	0.46	23	8	35%	9.0
Association of Cats and Magical Lights	2015	555	28%	0.18	364	291	80%	5.2
Association of Computer Maintenance	896	90	10%	0.03	107	55	51%	8.3
Association of Myths	57	28	49%	0.00	33	28	85%	4.8
A Star not a Tree?	142	29	20%	0.00	33	20	61%	7.8
Asteroid Rangers	188	68	36%	0.09	52	38	73%	7.0
Asteroids	704	125	18%	0.00	89	66	74%	6.5
Astro	307	103	34%	0.00	111	96	86%	3.5
Atlantis	455	75	16%	0.05	102	56	55%	7.2
A Towering Problem	2121	1028	48%	0.00	1047	942	90%	2.2
Attendance	21	8	38%	0.21	11	8	73%	6.6
Auto Completion	109	28	26%	0.05	36	27	75%	7.2
Automatic Trading	810	234	29%	0.03	223	146	65%	5.3
Autori	19014	12058	63%	0.00	11013	10680	97%	1.2
Average Rank	265	114	43%	0.30	81	59	73%	4.8
Average Speed	1125	353	31%	0.00	371	300	81%	3.7
A Vicious Pikeman (Easy)	1947	599	31%	0.00	496	424	85%	3.8
A Vicious Pikeman (Hard)	1229	218	18%	0.01	229	127	55%	8.4
Avion	1986	1107	56%	0.00	1087	1042	96%	1.4
Avogadro	174	75	43%	0.02	72	57	79%	5.2
Avoiding Airports	652	122	19%	0.08	128	71	55%	6.6
Avoiding the Apocalypse	645	252	39%	0.01	194	174	90%	4.1
Avoidland	735	367	50%	0.04	229	195	85%	3.8
A Walk Through The Forest	1263	424	34%	0.12	293	238	81%	4.5
Awkward Party	1744	738	42%	0.01	644	564	88%	2.8
Azulejos	1716	384	22%	0.23	355	270	76%	4.2
BAAS	115	47	41%	0.03	49	39	80%	6.4
Babelfish	8751	3757	43%	0.02	3049	2698	88%	2.0
Baby Bites	3347	1728	52%	0.00	1634	1523	93%	1.7
Babylonian Numbers	960	476	50%	0.00	482	424	88%	2.2
Baby Names	1731	250	14%	0.15	96	76	79%	3.1
Bachet's Game	1987	1077	54%	0.08	732	678	93%	2.1
Backpack Buddies	200	56	28%	0.04	50	38	76%	5.9
Backspace	9229	3507	38%	0.00	2762	2343	85%	2.8
Bacon, Eggs, and Spam	3444	2010	58%	0.00	1709	1605	94%	1.6
Baggage	316	105	33%	0.00	124	88	71%	5.5
Bag of Tiles	569	183	32%	0.10	133	97	73%	6.4
Bakice	97	39	40%	0.00	48	37	77%	6.0
Bakterije	180	21	12%	0.00	33	17	52%	8.6
Balanced Cut	116	13	11%	0.07	23	9	39%	8.8
Balanced Diet	972	421	43%	0.00	364	298	82%	4.2
Balanced Diet	580	177	31%	0.01	160	119	74%	5.5
Ball Bearings	491	184	37%	0.00	192	159	83%	3.9
Balls and Needles	368	175	48%	0.08	151	139	92%	3.6
Ball Tricks	63	3	5%	0.30	3	2	67%	7.9
Baloni	2621	889	34%	0.01	804	624	78%	4.0
Banana Problem	11	8	73%	0.30	8	7	88%	5.6
Banjo	265	48	18%	0.00	41	17	41%	9.2
Bank Queue	10543	2848	27%	0.00	2562	2082	81%	3.2
Barcode	2698	355	13%	0.07	276	191	69%	6.8
Bar Code	73	7	10%	3.81	7	5	71%	6.4
Bard	1582	751	47%	0.00	679	589	87%	2.7
Barica	224	86	38%	0.02	63	49	78%	5.5
Barking Up The Wrong Tree	231	29	13%	0.00	31	17	55%	8.5
Bar Shelf	293	174	59%	0.00	58	55	95%	1.8 - 8.7
Base-2 Palindromes	1142	447	39%	0.00	480	368	77%	4.4
basic	120	29	24%	0.00	36	24	67%	7.5
BASIC Interpreter	1478	260	18%	0.01	230	149	65%	6.4
Basic Programming 1	1240	131	11%	0.01	166	101	61%	3.5
Basic Programming 2	671	100	15%	0.03	103	67	65%	2.9
Basic Remains	474	214	45%	0.01	180	161	89%	3.4
Basin City Surveillance	818	103	13%	0.00	124	62	50%	8.7