UVa OJ全部题目列表（按难度分级，仅标题）

#	ID	Title	Solved by	Difficulty
1	100	The 3n + 1 problem	26485	1
2	102	Ecological Bin Packing	10608	2
3	10071	Back to High School Physics	9554	3
4	10055	Hashmat the Brave Warrior	9432	3
5	272	TEX Quotes	8192	3
6	458	The Decoder	7289	4
7	136	Ugly Numbers	6729	4
8	10038	Jolly Jumpers	6319	4
9	10035	Primary Arithmetic	6268	4
10	10018	Reverse and Add	6061	4
11	108	Maximum Sum	6022	4
12	113	Power of Cryptography	5804	5
13	494	Kindergarten Counting Game	5784	5
14	299	Train Swapping	5752	5
15	10082	WERTYU	5481	5
16	101	The Blocks Problem	5225	5
17	591	Box of Bricks	5113	5
18	10008	What's Cryptanalysis?	4942	5
19	10300	Ecological Premium	4839	5
20	575	Skew Binary	4732	6
21	369	Combinations	4543	6
22	151	Power Crisis	4470	6
23	382	Perfection	4393	6
24	10370	Above Average	4377	6
25	160	Factors and Factorials	4314	6
26	10189	Minesweeper	4303	6
27	579	ClockHands	4293	6
28	264	Count on Cantor	4237	6
29	424	Integer Inquiry	4214	6
30	499	What's The Frequency, Kenneth?	4194	6
31	10110	Light, More Light	4189	6
32	541	Error Correction	4096	6
33	543	Goldbach's Conjecture	4021	7
34	10004	Bicoloring	3939	7
35	10107	What is the Median?	3891	7
36	374	Big Mod	3876	7
37	686	Goldbach's Conjecture (II)	3852	7
38	105	The Skyline Problem	3839	7
39	495	Fibonacci Freeze	3827	7
40	483	Word Scramble	3793	7
41	10041	Vito's Family	3785	7
42	10019	Funny Encryption Method	3773	7
43	256	Quirksome Squares	3713	7
44	138	Street Numbers	3661	7
45	10079	Pizza Cutting	3627	7
46	530	Binomial Showdown	3609	7
47	10696	f91	3552	7
48	111	History Grading	3533	7
49	10340	All in All	3501	8
50	10783	Odd Sum	3500	8
51	476	Points in Figures: Rectangles	3481	8
52	344	Roman Digititis	3443	8
53	673	Parentheses Balance	3436	8
54	10346	Peter's Smoke	3367	8
55	120	Stacks of Flapjacks	3359	8
56	10469	To Carry or not to Carry	3338	8
57	10127	Ones	3329	8
58	492	Pig-Latin	3265	8
59	438	The Circumference of the Circle	3252	8
60	10327	Flip Sort	3214	8
61	401	Palindromes	3212	8
62	10050	Hartals	3211	8
63	103	Stacking Boxes	3207	8
64	324	Factorial Frequencies	3191	8
65	146	ID Codes	3138	8
66	350	Pseudo-Random Numbers	3115	9
67	10106	Product	3083	9
68	10222	Decode the Mad man	3037	9
69	10006	Carmichael Numbers	3036	9
70	568	Just the Facts	3033	9
71	440	Eeny Meeny Moo	3023	9
72	305	Joseph	2986	9
73	10405	Longest Common Subsequence	2954	9
74	583	Prime Factors	2952	9
75	484	The Department of Redundancy Department	2947	9
76	10302	Summation of Polynomials	2934	9
77	477	Points in Figures: Rectangles and Circles	2933	9
78	412	Pi	2898	9
79	446	Kibbles ``n'' Bits ``n'' Bits ``n'' Bits	2890	9
80	406	Prime Cuts	2885	9
81	10260	Soundex	2848	9
82	640	Self Numbers	2846	9
83	572	Oil Deposits	2835	9
84	294	Divisors	2832	9
85	118	Mutant Flatworld Explorers	2816	9
86	107	The Cat in the Hat	2791	9
87	445	Marvelous Mazes	2775	10
88	112	Tree Summing	2755	10
89	694	The Collatz Sequence	2741	10
90	706	LCD Display	2736	10
91	10013	Super long sums	2702	10
92	439	Knight Moves	2699	10
93	443	Humble Numbers	2680	10
94	674	Coin Change	2644	10
95	10812	Beat the Spread!	2596	10
96	371	Ackermann Functions	2573	10
97	834	Continued Fractions	2565	10
98	119	Greedy Gift Givers	2552	10
99	10220	I Love Big Numbers !	2532	10
100	386	Perfect Cubes	2529	10
101	167	The Sultan's Successors	2484	11
102	444	Encoder and Decoder	2477	11
103	713	Adding Reversed Numbers	2471	11
104	195	Anagram	2464	11
105	392	Polynomial Showdown	2458	11
106	10424	Love Calculator	2453	11
107	190	Circle Through Three Points	2430	11
108	291	The House Of Santa Claus	2425	11
109	10161	Ant on a Chessboard	2410	11
110	489	Hangman Judge	2373	11
111	128	Software CRC	2359	11
112	133	The Dole Queue	2334	11
113	490	Rotating Sentences	2323	11
114	10003	Cutting Sticks	2312	11
115	573	The Snail	2277	12
116	10098	Generating Fast, Sorted Permutation	2266	12
117	488	Triangle Wave	2252	12
118	408	Uniform Generator	2243	12
119	10324	Zeros and Ones	2225	12
120	10235	Simply Emirp	2220	12
121	441	Lotto	2200	12
122	106	Fermat vs. Pythagoras	2196	12
123	414	Machined Surfaces	2181	12
124	623	500!	2174	12
125	10323	Factorial! You Must be Kidding!!!	2141	12
126	576	Haiku Review	2138	12
127	200	Rare Order	2119	12
128	10209	Is This Integration ?	2118	13
129	10252	Common Permutation	2114	13
130	10432	Polygon Inside A Circle	2108	13
131	10062	Tell me the frequencies!	2101	13
132	116	Unidirectional TSP	2076	13
133	536	Tree Recovery	2046	13
134	10473	Simple Base Conversion	2034	13
135	10131	Is Bigger Smarter?	2017	13
136	847	A Multiplication Game	2012	13
137	10699	Count the factors	2010	13
138	104	Arbitrage	2005	13
139	10924	Prime Words	2004	13
140	417	Word Index	1992	13
141	156	Ananagrams	1986	13
142	496	Simply Subsets	1982	13
143	10409	Die Game	1982	13
144	478	Points in Figures: Rectangles, Circles, Triangles	1973	13
145	10530	Guessing Game	1966	13
146	10929	You can say 11	1963	13
147	621	Secret Research	1960	14
148	10195	The Knights Of The Round Table	1960	14
149	10338	Mischievous Children	1954	14
150	10066	The Twin Towers	1935	14
151	130	Roman Roulette	1933	14
152	352	The Seasonal War	1929	14
153	10921	Find the Telephone	1921	14
154	400	Unix ls	1914	14
155	10579	Fibonacci Numbers	1849	14
156	10192	Vacation	1843	14
157	10515	Powers Et Al.	1829	14
158	117	The Postal Worker Rings Once	1827	14
159	10000	Longest Paths	1822	15
160	147	Dollars	1805	15
161	846	Steps	1804	15
162	10550	Combination Lock	1803	15
163	155	All Squares	1797	15
164	191	Intersection	1796	15
165	10104	Euclid Problem	1796	15
166	10499	The Land of Justice	1762	15
167	10591	Happy Number	1744	15
168	10137	The Trip	1733	15
169	122	Trees on the level	1729	15
170	121	Pipe Fitters	1714	15
171	10310	Dog and Gopher	1714	15
172	10193	All You Need Is Love	1691	16
173	10305	Ordering Tasks	1689	16
174	10034	Freckles	1679	16
175	357	Let Me Count The Ways	1653	16
176	389	Basically Speaking	1652	16
177	10334	Ray Through Glasses	1637	16
178	10931	Parity	1634	16
179	10010	Where's Waldorf?	1615	16
180	271	Simply Syntax	1604	17
181	10099	The Tourist Guide	1604	17
182	300	Maya Calendar	1601	17
183	10450	World Cup Noise	1591	17
184	532	Dungeon Master	1590	17
185	562	Dividing coins	1585	17
186	514	Rails	1571	17
187	498	Polly the Polynomial	1569	17
188	612	DNA Sorting	1561	17
189	10105	Polynomial Coefficients	1560	17
190	534	Frogger	1555	17
191	10282	Babelfish	1555	17
192	594	One Little, Two Little, Three Little Endians	1549	17
193	348	Optimal Array Multiplication Sequence	1546	17
194	442	Matrix Chain Multiplication	1539	17
195	336	A Node Too Far	1532	17
196	10015	Joseph's Cousin	1521	17
197	10789	Prime Frequency	1507	18
198	10033	Interpreter	1505	18
199	10168	Summation of Four Primes	1499	18
200	340	Master-Mind Hints	1496	18
201	144	Student Grants	1482	18
202	10042	Smith Numbers	1477	18
203	154	Recycling	1460	18
204	10533	Digit Primes	1456	18
205	10420	List of Conquests	1455	18
206	109	SCUD Busters	1446	18
207	740	Baudot Data Communication Code	1431	19
208	10361	Automatic Poetry	1418	19
209	10394	Twin Primes	1417	19
210	216	Getting in Line	1413	19
211	544	Heavy Cargo	1406	19
212	10183	How Many Fibs?	1396	19
213	378	Intersecting Lines	1395	19
214	10286	Trouble with a Pentagon	1393	19
215	624	CD	1383	19
216	10074	Take the Land	1382	19
217	11000	Bee	1381	19
218	661	Blowing Fuses	1374	19
219	10922	2 the 9s	1374	19
220	10116	Robot Motion	1371	19
221	10608	Friends	1369	19
222	278	Chess	1367	19
223	10295	Hay Points	1365	19
224	10336	Rank the Languages	1359	19
225	537	Artificial Intelligence?	1353	20
226	10221	Satellites	1351	20
227	642	Word Amalgamation	1349	20
228	10191	Longest Nap	1339	20
229	11172	Relational Operator	1334	20
230	10276	Hanoi Tower Troubles Again!	1323	20
231	587	There's treasure everywhere!	1321	20
232	10970	Big Chocolate	1320	20
233	524	Prime Ring Problem	1316	20
234	10219	Find the ways !	1316	20
235	343	What Base Is This?	1311	20
236	516	Prime Land	1311	20
237	10152	ShellSort	1300	20
238	315	Network	1294	20
239	574	Sum It Up	1292	20
240	567	Risk	1289	21
241	474	Heads / Tails Probability	1287	21
242	355	The Bases Are Loaded	1285	21
243	10049	Self-describing Sequence	1273	21
244	10070	Leap Year or Not Leap Year and ...	1272	21
245	10182	Bee Maja	1267	21
246	10223	How many nodes ?	1262	21
247	636	Squares (III)	1250	21
248	202	Repeating Decimals	1247	21
249	10130	SuperSale	1245	21
250	10196	Check The Check	1243	21
251	10190	Divide, But Not Quite Conquer!	1241	21
252	10198	Counting	1241	21
253	123	Searching Quickly	1239	21
254	729	The Hamming Distance Problem	1207	22
255	10297	Beavergnaw	1206	22
256	10700	Camel trading	1195	22
257	320	Border	1189	22
258	465	Overflow	1187	22
259	497	Strategic Defense Initiative	1187	22
260	153	Permalex	1186	22
261	739	Soundex Indexing	1181	22
262	637	Booklet Printing	1177	23
263	10067	Playing with Wheels	1177	23
264	124	Following Orders	1169	23
265	409	Excuses, Excuses!	1169	23
266	423	MPI Maelstrom	1163	23
267	422	Word-Search Wonder	1156	23
268	459	Graph Connectivity	1153	23
269	486	English-Number Translator	1149	23
270	10026	Shoemaker's Problem	1146	23
271	10611	The Playboy Chimp	1140	23
272	253	Cube painting	1139	23
273	10474	Where is the Marble?	1135	23
274	10701	Pre, in and post	1132	23
275	10048	Audiophobia	1128	23
276	482	Permutation Arrays	1127	24
277	555	Bridge Hands	1121	24
278	10509	R U Kidding Mr. Feynman!	1120	24
279	10077	The Stern-Brocot Number System	1118	24
280	311	Packets	1113	24
281	10784	Diagonal	1113	24
282	10258	Contest Scoreboard	1111	24
283	485	Pascal's Triangle of Death	1109	24
284	748	Exponentiation	1105	24
285	413	Up and Down Sequences	1103	24
286	531	Compromise	1102	24
287	558	Wormholes	1102	24
288	10573	Geometry Paradox	1102	24
289	10945	Mother bear	1102	24
290	145	Gondwanaland Telecom	1094	24
291	10407	Simple division	1094	24
292	10170	The Hotel with Infinite Rooms	1086	24
293	114	Simulation Wizardry	1080	25
294	10025	The ? 1 ? 2 ? ... ? n = k problem	1078	25
295	10242	Fourth Point !!	1078	25
296	201	Squares	1077	25
297	10465	Homer Simpson	1076	25
298	297	Quadtrees	1073	25
299	326	Extrapolation Using a Difference Table	1073	25
300	10102	The path in the colored field	1071	25
301	170	Clock Patience	1063	25
302	10179	Irreducable Basic Fractions	1062	25
303	10162	Last Digit	1061	25
304	161	Traffic Lights	1058	25
305	140	Bandwidth	1053	25
306	10036	Divisibility	1052	25
307	10487	Closest Sums	1049	25
308	356	Square Pegs And Round Holes	1045	25
309	231	Testing the CATCHER	1037	26
310	10622	Perfect P-th Powers	1034	26
311	10678	The Grazing Cow	1028	26
312	784	Maze Exploration	1027	26
313	10009	All Roads Lead Where?	1023	26
314	10285	Longest Run on a Snowboard	1015	26
315	10056	What is the Probability ?	1010	26
316	10139	Factovisors	1010	26
317	10347	Medians	1009	26
318	10489	Boxes of Chocolates	1009	26
319	639	Don't Get Rooked	1007	26
320	615	Is It A Tree?	1006	26
321	836	Largest Submatrix	1006	26
322	10642	Can You Solve It?	1003	26
323	539	The Settlers of Catan	1001	26
324	701	The Archeologists' Dilemma	1001	26
325	10684	The jackpot	1001	26
326	10451	Ancient Village Sports	994	27
327	115	Climbing Trees	993	27
328	10703	Free spots	993	27
329	10427	Naughty Sleepy Boys	984	27
330	10633	Rare Easy Problem	981	27
331	325	Identifying Legal Pascal Real Constants	977	27
332	166	Making Change	973	27
333	455	Periodic Strings	973	27
334	152	Tree's a Crowd	971	27
335	275	Expanding Fractions	970	27
336	507	Jill Rides Again	968	27
337	10408	Farey sequences	967	27
338	10502	Counting Rectangles	967	27
339	10014	Simple calculations	964	27
340	384	Slurpys	962	28
341	10093	An Easy Problem!	961	28
342	125	Numbering Paths	958	28
343	141	The Spot Game	958	28
344	10125	Sumsets	958	28
345	10229	Modular Fibonacci	957	28
346	437	The Tower of Babylon	953	28
347	333	Recognizing Good ISBNs	952	28
348	10878	Decode the tape	949	28
349	10815	Andy's First Dictionary	944	28
350	10188	Automated Judge Script	940	28
351	10267	Graphical Editor	940	28
352	608	Counterfeit Dollar	934	28
353	110	Meta-Loopless Sorts	928	29
354	193	Graph Coloring	924	29
355	10299	Relatives	919	29
356	628	Passwords	916	29
357	10491	Cows and Cars	916	29
358	10365	Blocks	914	29
359	10080	Gopher II	913	29
360	580	Critical Mass	910	29
361	337	Interpreting Control Sequences	907	29
362	10020	Minimal coverage	902	29
363	164	String Computer	900	29
364	10714	Ants	900	29
365	377	Cowculations	899	29
366	10583	Ubiquitous Religions	899	29
367	700	Date Bugs	898	29
368	10176	Ocean Deep ! - Make it shallow !!	896	30
369	450	Little Black Book	890	30
370	436	Arbitrage (II)	885	30
371	10490	Mr. Azad and his Son!!!!!	884	30
372	10281	Average Speed	882	30
373	280	Vertex	879	30
374	10007	Count the Trees	877	30
375	10140	Prime Distance	873	30
376	725	Division	871	30
377	793	Network Connections	871	30
378	10298	Power Strings	869	30
379	10452	Marcus, help!	866	31
380	10404	Bachet's Game	861	31
381	10100	Longest Match	859	31
382	11185	Ternary	859	31
383	619	Numerically Speaking	854	31
384	10205	Stack 'em Up	853	31
385	644	Immediate Decodability	849	31
386	10508	Word Morphing	849	31
387	542	France '98	848	31
388	10673	Play with Floor and Ceil	848	31
389	127	``Accordian'' Patience	844	31
390	571	Jugs	844	31
391	332	Rational Numbers from Repeating Fractions	841	31
392	10359	Tiling	839	32
393	10078	The Art Gallery	838	32
394	10539	Almost Prime Numbers	832	32
395	696	How Many Knights	831	32
396	10002	Center of Masses	830	32
397	10948	The primary problem	830	32
398	263	Number Chains	824	32
399	353	Pesky Palindromes	821	32
400	712	S-Trees	819	32
401	10656	Maximum Sum (II)	812	33
402	10400	Game Show Math	810	33
403	466	Mirror, Mirror	807	33
404	10115	Automatic Editing	805	33
405	727	Equation	803	33
406	129	Krypton Factor	799	33
407	448	OOPS!	797	33
408	10664	Luggage	796	33
409	232	Crossword Answers	794	33
410	131	The Psychic Poker Player	793	33
411	10129	Play on Words	784	34
412	10194	Football (aka Soccer)	784	34
413	10081	Tight Words	783	34
414	10142	Australian Voting	780	34
415	10363	Tic Tac Toe	780	34
416	10303	How Many Trees?	774	34
417	10397	Connect the Campus	773	34
418	10935	Throwing cards away I	773	34
419	895	Word Problem	772	34
420	10293	Word Length and Frequency	767	35
421	10301	Rings and Glue	764	35
422	679	Dropping Balls	762	35
423	641	Do the Untwist	760	35
424	620	Cellular Structure	755	35
425	10311	Goldbach and Euler	755	35
426	383	Shipping Routes	751	35
427	10790	How Many Points of Intersection?	751	35
428	10954	Add All	746	36
429	126	The Errant Physicist	743	36
430	10800	Not That Kind of Graph	743	36
431	260	Il Gioco dell'X	741	36
432	10415	Eb Alto Saxophone Player	740	36
433	227	Puzzle	739	36
434	10443	Rock, Scissors, Paper	739	36
435	755	487--3279	738	36
436	913	Joana and the Odd Numbers	737	36
437	602	What Day Is It?	734	36
438	10940	Throwing cards away II	734	36
439	681	Convex Hull Finding	730	36
440	301	Transportation	729	36
441	306	Cipher	725	37
442	10112	Myacm Triangles	719	37
443	10341	Solve It	717	37
444	10494	If We Were a Child Again	717	37
445	585	Triangles	716	37
446	750	8 Queens Chess Problem	713	37
447	11044	Searching for Nessy	713	37
448	850	Crypt Kicker II	711	37
449	10315	Poker Hands	705	38
450	10852	Less Prime	705	38
451	10279	Mine Sweeper	704	38
452	394	Mapmaker	702	38
453	10496	Collecting Beepers	700	38
454	10903	Rock-Paper-Scissors Tournament	700	38
455	10283	The Kissing Circles	694	38
456	900	Brick Wall Patterns	691	38
457	460	Overlapping Rectangles	690	38
458	699	The Falling Leaves	687	39
459	402	M*A*S*H	685	39
460	10037	Bridge	684	39
461	10128	Queue	684	39
462	10101	Bangla Numbers	681	39
463	10693	Traffic Volume	679	39
464	825	Walking on the Safe Side	677	39
465	10057	A mid-summer night's dream.	675	39
466	10063	Knuth's Permutation	672	39
467	11059	Maximum Product	672	39
468	10069	Distinct Subsequences	670	40
469	213	Message Decoding	669	40
470	481	What Goes Up	666	40
471	785	Grid Colouring	665	40
472	10344	23 out of 5	664	40
473	10377	Maze Traversal	659	40
474	10551	Basic Remains	658	40
475	11192	Group Reverse	655	40
476	10245	The Closest Pair Problem	654	40
477	10706	Number Sequence	654	40
478	762	We Ship Cheap	651	41
479	10141	Request for Proposal	650	41
480	10600	ACM Contest and Blackout	647	41
481	159	Word Crosses	643	41
482	10810	Ultra-QuickSort	642	41
483	187	Transaction Processing	640	41
484	397	Equation Elation	640	41
485	808	Bee Breeding	640	41
486	861	Little Bishops	640	41
487	188	Perfect Hash	639	41
488	331	Mapping the Swaps	639	41
489	821	Page Hopping	635	42
490	10392	Factoring Large Numbers	633	42
491	469	Wetlands of Florida	632	42
492	839	Not so Mobile	631	42
493	820	Internet Bandwidth	630	42
494	11057	Exact Sum	629	42
495	10054	The Necklace	625	42
496	884	Factorial Factors	618	43
497	10375	Choose and divide	618	43
498	10976	Fractions Again?!	615	43
499	10523	Very Easy !!!	613	43
500	10589	Area	612	43
501	218	Moth Eradication	611	43
502	10519	!! Really Strange !!	608	44
503	10368	Euclid's Game	604	44
504	10918	Tri Tiling	602	44
505	10919	Prerequisites?	601	44
506	134	Loglan-A Logical Language	597	44
507	142	Mouse Clicks	596	44
508	391	Mark-up	594	45
509	10719	Quotient Polynomial	594	45
510	10177	(2/3/4)-D Sqr/Rects/Cubes/Boxes?	593	45
511	10730	Antiarithmetic?	592	45
512	254	Towers of Hanoi	587	45
513	10534	Wavio Sequence	585	45
514	148	Anagram checker	584	45
515	651	Deck	584	45
516	626	Ecosystem	583	45
517	10683	The decadary watch	582	46
518	435	Block Voting	581	46
519	10943	How do you add?	581	46
520	11121	Base -2	581	46
521	630	Anagrams (II)	580	46
522	634	Polygon	579	46
523	10500	Robot maps	579	46
524	737	Gleaming the Cubes	577	46
525	10360	Rat Attack	576	46
526	10287	Gifts in a Hexagonal Box	575	46
527	711	Dividing up	573	46
528	183	Bit Maps	571	46
529	362	18,000 Seconds Remaining	570	46
530	10051	Tower of Cubes	570	46
531	132	Bumpy Objects	569	47
532	10165	Stone Game	568	47
533	10213	How Many Pieces of Land ?	564	47
534	10369	Arctic Network	564	47
535	10916	Factstone Benchmark	564	47
536	10905	Children's Game	562	47
537	416	LED Test	561	47
538	10012	How Big Is It?	561	47
539	10879	Code Refactoring	560	47
540	540	Team Queue	559	47
541	10566	Crossed Ladders	558	47
542	10702	Travelling Salesman	556	48
543	880	Cantor Fractions	554	48
544	429	Word Transformation	553	48
545	10596	Morning Walk	551	48
546	10249	The Grand Dinner	550	48
547	10422	Knights in FEN	550	48
548	535	Globetrotter	548	48
549	10001	Garden of Eden	547	48
550	10326	The Polynomial Equation	547	48
551	703	Triple Ties: The Organizer's Nightmare	546	49
552	184	Laser Lines	544	49
553	10493	Cats, with or without Hats	544	49
554	10393	The One-Handed Typist	542	49
555	11005	Cheapest Base	539	49
556	379	Hi-Q	538	49
557	617	Nonstop Travel	537	49
558	714	Copying Books	536	49
559	10065	Useless Tile Packers	536	49
560	11063	B2-Sequence	536	49
561	10016	Flip-Flop the Squarelotron	534	50
562	10651	Pebble Solitaire	534	50
563	10803	Thunder Mountain	534	50
564	10364	Square	532	50
565	11069	A Graph Problem	532	50
566	601	The PATH	530	50
567	10813	Traditional BINGO	530	50
568	434	Matty's Blocks	529	50
569	10680	LCM	527	50
570	10930	A-Sequence	527	50
571	10653	Bombs! NO they are Mines!!	526	50
572	10210	Romeo and Juliet !	525	50
573	10926	How Many Dependencies?	525	50
574	11040	Add bricks in the wall	525	50
575	10199	Tourist Guide	523	51
576	10908	Largest Square	523	51
577	550	Multiplying by Rotation	521	51
578	590	Always on the run	516	51
579	208	Firetruck	515	51
580	10374	Election	514	52
581	10667	Largest Block	514	52
582	10200	Prime Time	513	52
583	10330	Power Transmission	512	52
584	10518	How Many Calls?	511	52
585	10147	Highways	510	52
586	273	Jack Straws	508	52
587	347	Run, Run, Runaround Numbers	508	52
588	10910	Marks Distribution	508	52
589	10061	How many zero's and how many digits ?	506	52
590	10088	Trees on My Island	506	52
591	855	Lunch in Grid City	505	52
592	10849	Move the bishop	505	52
593	10507	Waking up brain	502	53
594	10946	You want what filled?	502	53
595	165	Stamps	501	53
596	454	Anagrams	501	53
597	10306	e-Coins	501	53
598	327	Evaluating Simple C Expressions	499	53
599	10171	Meeting Prof. Miguel...	498	53
600	10791	Minimum Sum LCM	497	53
601	10044	Erdos Numbers	496	53
602	10763	Foreign Exchange	495	54
603	688	Mobile Phone Coverage	494	54
604	10739	String to Palindrome	493	54
605	10880	Colin and Ryan	490	54
606	10780	Again Prime? No Time.	489	54
607	10371	Time Zones	488	54
608	843	Crypt Kicker	485	55
609	10620	A Flea on a Chessboard	485	55
610	318	Domino Effect	483	55
611	471	Magic Numbers	482	55
612	10602	Editor Nottobad	481	55
613	11074	Draw Grid	481	55
614	11015	05-2 Rendezvous	479	55
615	186	Trip Routing	478	55
616	10391	Compound Words	477	56
617	10484	Divisibility of Factors	477	56
618	381	Making the Grade	476	56
619	677	All Walks of length ``n'' from the first node	476	56
620	10446	The Marriage Interview :-)	476	56
621	10773	Back to Intermediate Math	476	56
622	255	Correct Move	475	56
623	10527	Persistent Numbers	475	56
624	10202	Pairsumonious Numbers	474	56
625	10497	Sweet Child Makes Trouble	474	56
626	457	Linear Cellular Automata	473	56
627	556	Amazing	473	56
628	741	Burrows Wheeler Decoder	472	56
629	796	Critical Links	472	56
630	10304	Optimal Binary Search Tree	471	56
631	743	The MTM Machine	470	56
632	10689	Yet another Number Sequence	469	56
633	526	String Distance and Transform Process	467	57
634	10268	498-bis	467	57
635	10271	Chopsticks	467	57
636	162	Beggar My Neighbour	465	57
637	10126	Zipf's Law	465	57
638	627	The Net	464	57
639	584	Bowling	462	57
640	10705	The Fun Number System	462	57
641	10522	Height to Area	460	58
642	11001	Necklace	460	58
643	11150	Cola	459	58
644	10738	Riemann vs Mertens	458	58
645	705	Slash Maze	457	58
646	10820	Send a Table	457	58
647	622	Grammar Evaluation	456	58
648	10928	My Dear Neighbours	456	58
649	245	Uncompress	454	58
650	314	Robot	454	58
651	10005	Packing polygons	454	58
652	10617	Again Palindrome	451	59
653	638	Finding Rectangles	450	59
654	704	Colour Hash	450	59
655	10060	A hole to catch a man	450	59
656	10669	Three powers	450	59
657	10920	Spiral Tap	449	59
658	143	Orchard Trees	448	59
659	538	Balancing Bank Accounts	446	59
660	10132	File Fragmentation	444	60
661	10650	Determinate Prime	444	60
662	517	Word	442	60
663	551	Nesting a Bunch of Brackets	442	60
664	588	Video Surveillance	440	60
665	10307	Killing Aliens in Borg Maze	440	60
666	10309	Turn the Lights Off	439	60
667	586	Instant Complexity	438	60
668	10801	Lift Hopping	438	60
669	10090	Marbles	437	61
670	10354	Avoiding Your Boss	436	61
671	10925	Krakovia	436	61
672	168	Theseus and the Minotaur	435	61
673	209	Triangular Vertices	435	61
674	468	Key to Success	434	61
675	547	DDF	433	61
676	10022	Delta-wave	432	61
677	10721	Bar Codes	432	61
678	10337	Flight Planner	431	61
679	10460	Find the Permuted String	431	61
680	10865	Brownie Points	431	61
681	196	Spreadsheet	428	62
682	10233	Dermuba Triangle	428	62
683	10226	Hardwood Species	427	62
684	10871	Primed Subsequence	426	62
685	11039	Building designing	425	62
686	222	Budget Travel	424	62
687	10197	Learning Portuguese	422	63
688	290	Palindroms <---> smordnilaP	420	63
689	10120	Gift?!	420	63
690	756	Biorhythms	419	63
691	654	Ratio	418	63
692	833	Water Falls	418	63
693	10178	Count the Faces.	417	64
694	10503	The dominoes solitaire	417	64
695	11137	Ingenuous Cubrency	417	64
696	10541	Stripe	415	64
697	10154	Weights and Measures	414	64
698	418	Molecules	413	64
699	632	Compression (II)	413	64
700	10227	Forests	412	64
701	647	Chutes and Ladders	411	64
702	462	Bridge Hand Evaluator	410	65
703	296	Safebreaker	409	65
704	380	Call Forwarding	409	65
705	11219	How old are you?	409	65
706	501	Black Box	408	65
707	598	Bundling Newspapers	408	65
708	10896	Known Plaintext Attack	407	65
709	270	Lining Up	403	66
710	10201	Adventures in Moving - Part IV	403	66
711	10308	Roads in the North	403	66
712	10290	{Sum+=i++} to Reach N	402	66
713	10356	Rough Roads	402	66
714	321	The New Villa	401	66
715	10774	Repeated Josephus	400	66
716	10994	Simple Addition	399	66
717	177	Paper Folding	397	67
718	403	Postscript	397	67
719	10554	Calories from Fat	395	67
720	10092	The Problem with the Problem Setter	393	67
721	10325	The Lottery	393	67
722	616	Coconuts, Revisited	392	68
723	763	Fibinary Numbers	390	68
724	393	The Doors	389	68
725	10677	Base Equality	389	68
726	10776	Determine The Combination	389	68
727	815	Flooded!	388	68
728	220	Othello	387	68
729	11152	Colourful Flowers	387	68
730	10254	The Priest Mathematician	386	69
731	157	Route Finding	385	69
732	10284	Chessboard in FEN	385	69
733	10892	LCM Cardinality	384	69
734	139	Telephone Tangles	382	69
735	10453	Make Palindrome	382	69
736	10646	What is the Card?	382	69
737	10717	Mint	382	69
738	10585	Center of symmetry	381	70
739	10440	Ferry Loading II	376	70
740	11078	Open Credit System	374	71
741	10113	Exchange Rates	373	71
742	10312	Expression Bracketing	373	71
743	172	Calculator Language	372	71
744	11089	Fi-binary Number	370	72
745	10029	Edit Step Ladders	369	72
746	10543	Traveling Politician	369	72
747	10610	Gopher and Hawks	369	72
748	313	Intervals	367	72
749	897	Anagrammatic Primes	365	73
750	670	The dog task	364	73
751	10959	The Party, Part I	363	73
752	665	False coin	362	73
753	10625	GNU = GNU'sNotUnix	362	73
754	11105	Semi-prime H-numbers	362	73
755	702	The Vindictive Coach	361	73
756	10150	Doublets	359	74
757	10856	Recover Factorial	359	74
758	10387	Billiard	358	74
759	341	Non-Stop Travel	357	74
760	10603	Fill	357	74
761	10963	The Swallowing Ground	357	74
762	812	Trade on Verweggistan	356	74
763	10851	2D Hieroglyphs decoder	356	74
764	10894	Save Hridoy	355	75
765	10174	Couple-Bachelor-Spinster Numbers.	354	75
766	10313	Pay the Price	354	75
767	11115	Uncle Jack	354	75
768	137	Polygons	353	75
769	345	It's Ir-Resist-Able!	353	75
770	10181	15-Puzzle Problem	353	75
771	10806	Dijkstra, Dijkstra.	353	75
772	11220	Decoding the message.	353	75
773	11068	An Easy Task	352	75
774	181	Hearts	351	75
775	10718	Bit Mask	351	75
776	657	The die is cast	350	76
777	10401	Injured Queen Problem	350	76
778	11076	Add Again	350	76
779	11067	Little Red Riding Hood	348	76
780	10891	Game of Sum	347	76
781	614	Mapping the Route	345	77
782	10637	Coprimes	345	77
783	10679	I Love Strings!!	345	77
784	11173	Grey Codes	345	77
785	493	Rational Spiral	342	77
786	10986	Sending email	342	77
787	10912	Simple Minded Hashing	341	78
788	11056	Formula 1	341	78
789	545	Heads	339	78
790	10212	The Last Non-zero Digit.	339	78
791	10672	Marbles on a tree	339	78
792	10895	Matrix Transpose	339	78
793	548	Tree	338	78
794	871	Counting Cells in a Blob	338	78
795	11085	Back to the 8-Queens	337	79
796	427	FlatLand Piano Movers	336	79
797	710	The Game	336	79
798	11003	Boxes	336	79
799	388	Galactic Import	335	79
800	339	SameGame Simulation	334	79
801	10586	Polynomial Remains	332	80
802	10947	Bear with me, again..	332	80
803	11151	Longest Palindrome	331	80
804	11054	Wine trading in Gergovia	330	80
805	10616	Divisible Group Sums	328	81
806	349	Transferable Voting (II)	327	81
807	10382	Watering Grass	327	81
808	10576	Y2K Accounting Bug	327	81
809	10742	The New Rule in Euphomia	327	81
810	10047	The Monocycle	326	81
811	10482	The Candyman Can	326	81
812	776	Monkeys in a Regular Forest	325	81
813	10520	Determine it	325	81
814	10578	The Game of 31	325	81
815	668	Parliament	324	82
816	589	Pushing Boxes	323	82
817	732	Anagrams by Stack	323	82
818	10075	Airlines	323	82
819	150	Double Time	322	82
820	135	No Rectangles	320	83
821	10528	Major Scales	320	83
822	10830	A New Function	320	83
823	447	Population Explosion	319	83
824	565	Pizza Anyone?	318	83
825	11064	Number Theory	318	83
826	10670	Work Reduction	317	84
827	10978	Let's Play Magic!	317	84
828	557	Burger	316	84
829	10259	Hippity Hopscotch	316	84
830	10406	Cutting tabletops	316	84
831	10842	Traffic Flow	316	84
832	179	Code Breaking	315	84
833	865	Substitution Cypher	314	84
834	11042	Complex, difficult and complicated	314	84
835	11244	Counting Stars	313	85
836	10911	Forming Quiz Teams	311	85
837	11012	Cosmic Cabbages	311	85
838	302	John's trip	310	85
839	892	Finding words	310	85
840	10532	Combination! Once Again	310	85
841	10536	Game of Euler	310	85
842	10662	The Wedding	310	85
843	10720	Graph Construction	310	85
844	467	Synching Signals	309	86
845	10635	Prince and Princess	309	86
846	10296	Jogging Trails	308	86
847	10991	Region	307	86
848	520	Append	306	87
849	10574	Counting Rectangles	305	87
850	11233	Deli Deli	305	87
851	533	Equation Solver	304	87
852	10058	Jimmi's Riddles	304	87
853	10264	The Most Potent Corner	304	87
854	10333	The Tower of ASCII	304	87
855	10821	Constructing BST	304	87
856	10017	The Never Ending Towers of Hanoi	303	87
857	10261	Ferry Loading	302	88
858	11062	Andy's Second Dictionary	301	88
859	11207	The easiest way	301	88
860	633	A Chess Knight	300	88
861	10250	The Other Two Trees	300	88
862	10681	Teobaldo's Trip	300	88
863	993	Product of digits	299	89
864	10097	The Color Game	299	89
865	10862	Connect the Cable Wires	299	89
866	11045	My T-shirt suits me	298	89
867	10094	Place the Guards	297	89
868	11223	O: dah dah dah!	297	89
869	338	Long Multiplication	296	89
870	521	Gossiping	296	89
871	10167	Birthday Cake	296	89
872	10217	A Dinner with Schwarzenegger!!!	296	89
873	10555	Dead Fraction	296	89
874	10351	Cutting Diamonds	295	90
875	10083	Division	294	90
876	10203	Snow Clearing	294	90
877	171	Car Trialling	292	91
878	10957	So Doku Checker	292	91
879	276	Egyptian Multiplication	289	92
880	10771	Barbarian tribes	289	92
881	242	Stamps and Envelope Size	288	92
882	10164	Number Game	288	92
883	10785	The Mad Numerologist	288	92
884	11222	Only I did it!	288	92
885	10410	Tree Reconstruction	287	92
886	10466	How Far?	287	92
887	346	Getting Chorded	286	93
888	529	Addition Chains	286	93
889	10685	Nature	285	93
890	11086	Composite Prime	285	93
891	185	Roman Numerals	284	93
892	753	A Plug for UNIX	284	93
893	824	Coast Tracker	284	93
894	10158	War	284	93
895	10564	Paths through the Hourglass	283	94
896	10480	Sabotage	282	94
897	428	Swamp County Roofs	280	95
898	662	Fast Food	280	95
899	718	Skyscraper Floors	280	95
900	385	DNA Translation	279	95
901	523	Minimum Transport Cost	279	95
902	10232	Bit-wise Sequence	279	95
903	518	Time	278	95
904	10146	Dictionary	278	95
905	735	Dart-a-Mania	277	96
906	10557	XYZZY	277	96
907	10562	Undraw the Trees	277	96
908	10759	Dice Throwing	276	96
909	410	Station Balance	275	96
910	10187	From Dusk Till Dawn	275	96
911	11058	Encoding	275	96
912	10043	Chainsaw Massacre	274	97
913	10263	Railway	274	97
914	11093	Just Finish it up	274	97
915	452	Project Scheduling	273	97
916	10257	Dick and Jane	273	97
917	10634	Say NO to Memorization	273	97
918	10716	Evil Straw Warts Live	273	97
919	375	Inscribed Circles and Isosceles Triangles	272	97
920	10787	Modular Equations	272	97
921	10792	The Laurel-Hardy Story	272	97
922	10823	Of Circles and Squares	272	97
923	10510	Cactus	271	98
924	10328	Coin Toss	270	98
925	603	Parking Lot	269	98
926	10964	Strange Planet	269	98
927	308	Tin Cutter	268	99
928	604	The Boggle Game	267	99
929	10668	Expanding Rods	267	99
930	178	Shuffling Patience	266	100
931	433	Bank (Not Quite O.C.R.)	266	100
932	10419	Sum-up the Primes	266	100
933	10666	The Eurocup is Here!	266	100
934	10733	The Colored Cubes	266	100
935	10396	Vampire Numbers	265	100
936	10855	Rotated square	265	100
937	211	The Domino Effect	264	100
938	613	Numbers That Count	264	100
939	10495	Conic Distance	264	100
940	10626	Buying Coke	264	100
941	10902	Pick-up Sticks	264	100
942	11110	Equidivisions	264	100
943	198	Peter's Calculator	263	101
944	10917	Walk Through the Forest	263	101
945	592	Island of Logic	262	101
946	10814	Simplifying Fractions	262	101
947	837	Light and Transparencies	261	101
948	10111	Find the Winning Move	261	101
949	10428	The Roots	261	101
950	11029	Leading and Trailing	261	101
951	11221	Magic square palindromes.	261	101
952	10039	Railroads	259	102
953	158	Calendar	258	103
954	852	Deciding victory in Go	258	103
955	10505	Montesco vs Capuleto	258	103
956	10350	Liftless EME	257	103
957	10567	Helping Fill Bates	257	103
958	10816	Travel in Desert	257	103
959	10827	Maximum sum on a torus	257	103
960	10318	Security Panel	256	103
961	11100	The Trip, 2007	256	103
962	599	The Forrest for the Trees	255	104
963	10439	Temple of Dune	254	104
964	230	Borrowers	253	105
965	10804	Gopher Strategy	253	105
966	10898	Combo Deal	253	105
967	395	Board Silly	252	105
968	671	Spell checker	252	105
969	11038	How Many O's?	252	105
970	11055	Homogeneous squares	252	105
971	745	Numeric Puzzles Again!	251	106
972	10874	Segments	251	106
973	948	Fibonaccimal Base	250	106
974	10278	Fire Station	248	107
975	10843	Anne's game	248	107
976	174	Strategy	246	108
977	257	Palinwords	246	108
978	561	Jackpot	246	108
979	845	Gas Station Numbers	245	108
980	10316	Airline Hub	245	108
981	10506	The Ouroboros problem	245	108
982	487	Boggle Blitz	244	109
983	10040	Ouroboros Snake	244	109
984	303	Pipe	243	109
985	307	Sticks	243	109
986	10246	Asterix and Obelix	243	109
987	974	Kaprekar Numbers	242	109
988	10688	The Poor Giant	242	109
989	563	Crimewave	241	110
990	10560	Minimum Weight	241	110
991	11026	A Grouping Problem	241	110
992	759	The Return of the Roman Empire	240	110
993	10504	Hidden squares	240	110
994	11133	Eigensequence	240	110
995	10980	Lowest Price in Town	238	111
996	405	Message Routing	237	112
997	10317	Equating Equations	237	112
998	10357	Playball !!!	237	112
999	10547	Hidden Truth in Recurrence	237	112
1000	707	Robbery	236	112
1001	10218	Let's Dance !!!	235	113
1002	10416	Folding My T-Shirt	235	113
1003	11060	Beverages	235	113
1004	215	Spreadsheet Calculator	234	113
1005	505	Moscow time	234	113
1006	869	Airline Comparison	234	113
1007	10215	The Largest/Smallest Box ...	234	113
1008	192	Synchronous Design	233	114
1009	519	Puzzle (II)	233	114
1010	10944	Nuts for nuts..	232	114
1011	11002	Towards Zero	232	114
1012	10793	The Orc Attack	231	115
1013	10942	Can of Beans	231	115
1014	10086	Test the Rods	230	115
1015	10722	Super Lucky Numbers	230	115
1016	10745	Dominant Strings	230	115
1017	10483	The Sum Equals the Product	229	116
1018	10901	Ferry Loading III	229	116
1019	652	Eight	228	116
1020	10023	Square root	228	116
1021	10339	Watching Watches	228	116
1022	10389	Subway	228	116
1023	10421	Critical Wave	228	116
1024	10900	So you want to be a 2n-aire?	228	116
1025	10915	War on Weather	228	116
1026	11103	WFF 'N PROOF	228	116
1027	425	Enigmatic Encryption	227	117
1028	10349	Antenna Placement	227	117
1029	10593	Kites	227	117
1030	10425	Mobile Destroyer	226	117
1031	10819	Trouble of 13-Dots	226	117
1032	787	Maximum Sub-sequence Product	225	118
1033	10180	Rope Crisis in Ropeland!	225	118
1034	10288	Coupons	225	118
1035	10655	Contemplation - Algebra	225	118
1036	274	Cat and Mouse	224	118
1037	10243	Fire! Fire!! Fire!!!	224	118
1038	618	Doing Windows	222	119
1039	11049	Basic wall maze	222	119
1040	11108	Tautology	222	119
1041	298	Race Tracks	220	120
1042	10977	Enchanted Forest	220	120
1043	902	Password Search	219	121
1044	10537	The Toll! Revisited	219	121
1045	10710	Chinese Shuffle	219	121
1046	11022	String Factoring	219	121
1047	268	Double Trouble	218	121
1048	672	Gangsters	218	121
1049	10085	The most distant state	218	121
1050	11203	Can you decide it for ME?	218	121
1051	10021	Cube in the labirint	217	122
1052	10390	Bean Counting	217	122
1053	10535	Shooter	217	122
1054	658	It's not a Bug, it's a Feature!	216	123
1055	726	Decode	216	123
1056	10329	Combinatorial Expression	216	123
1057	10462	Is There A Second Way Left?	216	123
1058	10549	Russian Dolls	216	123
1059	10423	Peter Takes a Tramway	215	123
1060	10477	The Hybrid Knight	215	123
1061	415	Sunrise	214	124
1062	432	Modern Art	214	124
1063	10149	Yahtzee	214	124
1064	10320	Cow Trouble! Help Please!!	214	124
1065	182	Bonus Bonds	213	124
1066	10433	Automorphic Numbers	213	124
1067	10449	Traffic	213	124
1068	10459	The Tree Root	213