Sphere Online Judge classical problems

	Table of Contents
	1. Problem TEST (1. Life, the Universe, and Everything)
	2. Problem PRIME1 (2. Prime Generator)
	3. Problem SBSTR1 (3. Substring Check (Bug Funny))
	4. Problem ONP (4. Transform the Expression)
	5. Problem PALIN (5. The Next Palindrome)
	6. Problem ARITH (6. Simple Arithmetics)
	7. Problem BULK (7. The Bulk!)
	8. Problem CMPLS (8. Complete the Sequence!)
	9. Problem DIRVS (9. Direct Visibility)
	10. Problem CMEXPR (10. Complicated Expressions)
	11. Problem FCTRL (11. Factorial)
	12. Problem MMIND (12. The Game of Master-Mind)
	13. Problem HOTLINE (13. Hotline)
	14. Problem IKEYB (14. I-Keyboard)
	15. Problem SHPATH (15. The Shortest Path)
	16. Problem TETRA (16. Sphere in a tetrahedron)
	17. Problem CRYPTO1 (17. The Bytelandian Cryptographer (Act I))
	18. Problem CRYPTO2 (18. The Bytelandian Cryptographer (Act II))
	19. Problem CRYPTO3 (19. The Bytelandian Cryptographer (Act III))
	20. Problem CRYPTO4 (20. The Bytelandian Cryptographer (Act IV))
	21. Problem TRICENTR (22. Triangle From Centroid)
	22. Problem PIR (23. Pyramids)
	23. Problem FCTRL2 (24. Small factorials)
	24. Problem POUR1 (25. Pouring water)
	25. Problem BSHEEP (26. Build the Fence)
	26. Problem SBANK (27. Sorting Bank Accounts)
	27. Problem HMRO (28. Help the Military Recruitment Office!)
	28. Problem HASHIT (29. Hash it!)
	29. Problem BLINNET (30. Bytelandian Blingors Network)
	30. Problem MUL (31. Fast Multiplication)
	31. Problem NHAY (32. A Needle in the Haystack)
	32. Problem TRIP (33. Trip)
	33. Problem RUNAWAY (34. Run Away)
	34. Problem EQBOX (35. Equipment Box)
	35. Problem CODE1 (36. Secret Code)
	36. Problem PROPKEY (37. The Proper Key)
	37. Problem LABYR1 (38. Labyrinth)
	38. Problem PIGBANK (39. Piggy-Bank)
	39. Problem STONE (40. Lifting the Stone)
	40. Problem WORDS1 (41. Play on Words)
	41. Problem ADDREV (42. Adding Reversed Numbers)
	42. Problem BOOKS1 (43. Copying Books)
	43. Problem SCYPHER (44. Substitution Cipher)
	44. Problem COMMEDIA (45. Commedia dell Arte)
	45. Problem SCRAPER (47. Skyscraper Floors)
	46. Problem BEADS (48. Glass Beads)
	47. Problem HAREFOX (49. Hares and Foxes)
	48. Problem INCARDS (50. Invitation Cards)
	49. Problem TOUR (51. Fake tournament)
	50. Problem JULKA (54. Julka)
	51. Problem JASIEK (55. Jasiek)
	52. Problem DYZIO (56. Dyzio)
	53. Problem SUPPER (57. Supernumbers in a permutation)
	54. Problem PICAD (58. Crime at Piccadily Circus)
	55. Problem BIA (59. Bytelandian Information Agency)
	56. Problem DANCE (60. The Gordian Dance)
	57. Problem BRCKTS (61. Brackets)
	58. Problem IMP (62. The Imp)
	59. Problem SQRBR (63. Square Brackets)
	60. Problem PERMUT1 (64. Permutations)
	61. Problem BALL1 (65. Ball)
	62. Problem CRSCNTRY (66. Cross-country)
	63. Problem CUTOUT (67. Cutting out)
	64. Problem EXPR1 (68. Expression)
	65. Problem MOULDS (69. Moulds)
	66. Problem RELATS1 (70. Relations)
	67. Problem TREE1 (71. Tree)
	68. Problem BAC (73. Bacterial)
	69. Problem DIVSUM (74. Divisor Summation)
	70. Problem EDIT1 (75. Editor)
	71. Problem EDIT2 (76. Editor Inverse)
	72. Problem BRICKS (77. New bricks disorder)
	73. Problem MARBLES (78. Marbles)
	74. Problem EASYPIE (82. Easy Problem)
	75. Problem BUNDLE (83. Bundling)
	76. Problem SHORTCUT (84. Shortcut)
	77. Problem DICE1 (85. Dice Contest)
	78. Problem RAIN1 (86. November Rain)
	79. Problem FOOTBALL (87. Football)
	80. Problem TREE2 (88. Which is Next)
	81. Problem HANGLET (89. Hang or not to hang)
	82. Problem MINIMAX (90. Minimizing maximizer)
	83. Problem TWOSQRS (91. Two squares or not two squares)
	84. Problem CUTSQRS (92. Cutting off Squares)
	85. Problem MAYA (94. Numeral System of the Maya)
	86. Problem STPAR (95. Street Parade)
	87. Problem SHOP (96. Shopping)
	88. Problem PARTY (97. Party Schedule)
	89. Problem DFLOOR (98. Dance Floor)
	90. Problem BUS (99. Bus)
	91. Problem BABTWR (100. Tower of Babylon)
	92. Problem FISHER (101. Fishmonger)
	93. Problem LITEPIPE (102. GX Light Pipeline Inc)
	94. Problem HIGH (104. Highways)
	95. Problem ALICEBOB (105. Alice and Bob)
	96. Problem BINSTIRL (106. Binary Stirling Numbers)
	97. Problem MAYACAL (107. Calendar of the Maya)
	98. Problem MORSE (108. Decoding Morse Sequences)
	99. Problem EXCHNG (109. Exchanges)
	100. Problem CISTFILL (110. Fill the Cisterns)
	101. Problem SEGVIS (112. Horizontally Visible Segments)
	102. Problem FAMILY (115. Family)
	103. Problem INTERVAL (116. Intervals)
	104. Problem RHOMBS (118. Rhombs)
	105. Problem SERVERS (119. Servers)
	106. Problem SOLIT (120. Solitaire)
	107. Problem TTABLE (121. Timetable)
	108. Problem STEVE (122. Voracious Steve)
	109. Problem PAYING (123. Paying in Byteland)
	110. Problem RENT (130. Rent your airplane and make money)
	111. Problem SQDANCE (131. Square dance)
	112. Problem HELPR2D2 (132. Help R2-D2!)
	113. Problem PHONY (134. Phony Primes)
	114. Problem MAWORK (135. Men at work)
	115. Problem TRANS (136. Transformation)
	116. Problem PARTIT (137. Partition)
	117. Problem POSTERS (138. Election Posters)
	118. Problem MAZE (139. The Long and Narrow Maze)
	119. Problem LONER (140. The Loner)
	120. Problem GLUE (142. Johnny and the Glue)
	121. Problem ALIENS (145. Aliens)
	122. Problem MULTIPLY (146. Fast Multiplication Again)
	123. Problem TAUT (147. Tautology)
	124. Problem MLAND (148. Land for Motorways)
	125. Problem FSHEEP (149. Fencing in the Sheep)
	126. Problem PLONK (150. Where to Drink the Plonk?)
	127. Problem COURIER (151. The Courier)
	128. Problem SCALES (153. Balancing the Stone)
	129. Problem ROCK (154. Sweet and Sour Rock)
	130. Problem PALSEC (160. Choosing a Palindromic Sequence)
	131. Problem PAINTTMP (174. Paint templates)
	132. Problem POLY1 (175. Polygon)
	133. Problem SUM1SEQ (176. Sum of one-sequence)
	134. Problem ABWORDS (177. AB-words)
	135. Problem ROADNET (178. Road net)
	136. Problem WORDEQ (179. Word equations)
	137. Problem CONTPACK (180. How to pack containers)
	138. Problem SCUBADIV (181. Scuba diver)
	139. Problem WINDOW1 (182. Window)
	140. Problem ASCIRC (183. Assembler circuits)
	141. Problem ATMS (184. Automatic Teller Machines)
	142. Problem CHASE1 (185. Chase)
	143. Problem LITELANG (186. The lightest language)
	144. Problem FLBRKLIN (187. Flat broken lines)
	145. Problem RECTNG1 (188. Rectangles)
	146. Problem MUSKET (196. Musketeers)
	147. Problem EMPTY (199. Empty Cuboids)
	148. Problem MONODIG (200. Monodigital Representations)
	149. Problem POLYGAME (201. The Game of Polygons)
	150. Problem ROCKETS (202. Rockets)
	151. Problem POTHOLE (203. Potholers)
	152. Problem SLEEP (204. Sleepwalker)
	153. Problem ICERINK (205. Icerink)
	154. Problem BITMAP (206. Bitmap)
	155. Problem THREECOL (207. Three-coloring of binary trees)
	156. Problem STORE (208. Store-keeper)
	157. Problem MAP (209. The Map)
	158. Problem ALTARS (210. The Altars)
	159. Problem PRIMIT (211. Primitivus recurencis)
	160. Problem WATER (212. Water among Cubes)
	161. Problem PANIC (215. Panic in the Plazas)
	162. Problem SOPARADE (217. Soldiers on Parade)
	163. Problem PHRASES (220. Relevant Phrases of Annihilation)
	164. Problem VONNY (224. Vonny and her dominos)
	165. Problem JEWELS (226. Jewelry and Fashion)
	166. Problem ORDERS (227. Ordering the Soldiers)
	167. Problem SHAMAN (228. Shamans)
	168. Problem SORTING (229. Sorting is easy)
	169. Problem ZEBRA (231. The Zebra Crossing)
	170. Problem HOLIDAY1 (234. Getting Rid of the Holidays (Act I))
	171. Problem VFMUL (235. Very Fast Multiplication)
	172. Problem ROMAN (236. Converting number formats)
	173. Problem SUMITR (237. Sums in a Triangle)
	174. Problem HOLIDAY2 (238. Getting Rid of the Holidays (Act II))
	175. Problem BTOUR (239. Tour de Byteland)
	176. Problem BLOCKS (241. Arranging the Blocks)
	177. Problem STABLEMP (243. Stable Marriage Problem)
	178. Problem SQRROOT (245. Square Root)
	179. Problem CHOCOLA (247. Chocolate)
	180. Problem CTAIN (260. Containers)
	181. Problem TRIPART (261. Triangle Partitioning)
	182. Problem CONNECT (262. Connections)
	183. Problem PERIOD (263. Period)
	184. Problem CORNET (264. Corporative Network)
	185. Problem CAVE (272. Cave Exploration)
	186. Problem WMELON (274. Johnny and the Watermelon Plantation)
	187. Problem WATERWAY (275. The Water Ringroad)
	188. Problem CTGAME (277. City Game)
	189. Problem BICYCLE (278. Bicycle)
	190. Problem INUMBER (279. Interesting number)
	191. Problem LIFTS (280. Lifts)
	192. Problem MUDDY (282. Muddy Fields)
	193. Problem NAPTIME (283. Naptime)
	194. Problem SCITIES (286. Selfish Cities)
	195. Problem NETADMIN (287. Smart Network Administrator)
	196. Problem PON (288. Prime or Not)
	197. Problem POLYEQ (290. Polynomial Equations)
	198. Problem CUBERT (291. Cube Root)
	199. Problem ALIBB (292. Alibaba)
	200. Problem OFBEAT (293. Officers on the Beat)
	201. Problem TWORK (296. Teamwork is Crucial)
	202. Problem AGGRCOW (297. Aggressive cows)
	203. Problem CABLETV (300. Cable TV Network)
	204. Problem BOOK (301. Booklets)
	205. Problem CANTON (302. Count on Cantor)
	206. Problem UCUBE (303. The Unstable Cube)
	207. Problem RATTERN (309. The Room Pattern)
	208. Problem PITPAIR (318. Pythagorean Legacy)
	209. Problem WINDMILL (325. The Tall Windmills)
	210. Problem PLATON (327. Platon and Socrates)
	211. Problem BISHOPS (328. Bishops)
	212. Problem CALLS (329. Calls)
	213. Problem HARDQ (332. Hard Question)
	214. Problem PHDISP (334. The Philosophical Dispute)
	215. Problem EOPERA (336. Exchange Operations)
	216. Problem SEQ (339. Recursive Sequence)
	217. Problem POKER (344. Poker)
	218. Problem MIXTURES (345. Mixtures)
	219. Problem COINS (346. Bytelandian gold coins)
	220. Problem EXPEDI (348. Expedition)
	221. Problem AROUND (349. Around the world)
	222. Problem LANDSCAP (350. Landscaping)
	223. Problem HAN01 (351. Ha-noi!)
	224. Problem ACT (359. Alpha Centauri Tennis)
	225. Problem IGARB (362. Ignore the Garbage)
	226. Problem LISA (364. Pocket Money)
	227. Problem PHIDIAS (365. Phidias)
	228. Problem FARMER (366. Farmer)
	229. Problem EMPODIA (367. Empodia)
	230. Problem CSTREET (368. Cobbled streets)
	231. Problem MATH1 (369. Math I)
	232. Problem ONEZERO (370. Ones and zeros)
	233. Problem BENEFACT (372. The Benefactor)
	234. Problem GREED (373. Greedy island)
	235. Problem MATRIX (374. Count maximum matrices)
	236. Problem QTREE (375. Query on a tree)
	237. Problem ACS (376. A concrete simulation)
	238. Problem TAXI (377. Taxi)
	239. Problem PERMUT2 (379. Ambiguous Permutations)
	240. Problem BINGO (380. Bullshit Bingo)
	241. Problem CHICAGO (381. 106 miles to Chicago)
	242. Problem DECORATE (382. Decorate the wall)
	243. Problem EUROPEAN (383. European railroad tracks)
	244. Problem FOOL (384. Any fool can do it)
	245. Problem GAME (385. Game schedule required)
	246. Problem HELP (386. Help the problem setter)
	247. Problem TOURS (387. Travelling tours)
	248. Problem MENU (388. Menu)
	249. Problem HOSPITAL (389. Use of Hospital Facilities)
	250. Problem BILLIARD (390. Billiard)
	251. Problem RAILROAD (391. Railroads)
	252. Problem SPIN (392. Spin)
	253. Problem HEXAGON (393. Hexagon)
	254. Problem ACODE (394. Alphacode)
	255. Problem APRIME (395. Anti-prime Sequences)
	256. Problem HITOMISS (396. Hit or Miss)
	257. Problem CONDUIT (397. I Conduit)
	258. Problem RPGAMES (398. Roll Playing Games)
	259. Problem TRANK (399. Team Rankings)
	260. Problem TOANDFRO (400. To and Fro)
	261. Problem TRANSL (401. Translations)
	262. Problem HIKE (402. Hike on a Graph)
	263. Problem FRACTION (403. Sort fractions)
	264. Problem SCANNER (404. Scanner)
	265. Problem TCUTTER (405. Tin Cutter)
	266. Problem LOGIC (406. Logic)
	267. Problem RNUMBER (407. Random Number)
	268. Problem JRIDE (408. Jill Rides Again)
	269. Problem DELCOMM (409. DEL Command)
	270. Problem VHUFFM (410. Variable Radix Huffman Encoding)
	271. Problem NUMQDW (411. Number of quite different words)
	272. Problem COVER (412. K-path cover)
	273. Problem WPUZZLES (413. Word Puzzles)
	274. Problem BONFIRE (414. Equatorial Bonfire)
	275. Problem DIV15 (416. Divisibility by 15)
	276. Problem LAZYPROG (417. The lazy programmer)
	277. Problem NECKLACE (418. Necklace)
	278. Problem TRANSP (419. Transposing is Fun)
	279. Problem AROAD (421. Another Road Problem)
	280. Problem TRANSP2 (422. Transposing is Even More Fun)
	281. Problem ASSIGN (423. Assignments)
	282. Problem HAJIME (425. Kill evil instantly)
	283. Problem PARTPALI (428. Particular Palindromes)
	284. Problem TCNUMFL (449. Simple Numbers with Fractions Conversion)
	285. Problem CLTZ (515. Collatz)
	286. Problem ZZPERM (518. Zig-Zag Permutation)
	287. Problem DIV (526. Divisors)
	288. Problem DIV2 (530. Divisors 2)
	289. Problem INCR (598. Increasing Subsequences)
	290. Problem QUEST4 (660. Dungeon of Death)
	291. Problem QUEST5 (661. Nail Them)
	292. Problem SUBS (665. String it out)
	293. Problem VOCV (666. Con-Junctions)
	294. Problem LSORT (676. Sorting is not easy)
	295. Problem BROW (677. A place for the brewery)
	296. Problem HANOI07 (681. Building the Tower)
	297. Problem PAIRINT (682. Pairs of Integers)
	298. Problem ASSIGN4 (684. Another Assignment Problem)
	299. Problem SEQPAR (685. Partition the sequence)
	300. Problem REPEATS (687. Repeats)
	301. Problem SAM (688. Toy Cars)
	302. Problem LWAR (693. Lethal Warfare)
	303. Problem DISUBSTR (694. Distinct Substrings)
	304. Problem UFAST (695. Unite Fast)
	305. Problem LIAR (696. Liar Liar)
	306. Problem MWORDS (697. Matrix Words)
	307. Problem PLHOP (698. Plane Hopping)
	308. Problem HKNAP (699. Huge Knap Sack)
	309. Problem BPRED (700. Branch Prediction)
	310. Problem EXPAND (702. Barn Expansion)
	311. Problem SERVICE (703. Mobile Service)
	312. Problem PSTRING (704. Remove The String)
	313. Problem SUBST1 (705. New Distinct Substrings)
	314. Problem TFSETS (707. Triple-Free Sets)
	315. Problem NICEDAY (709. The day of the competitors)
	316. Problem PRO (726. Promotion)
	317. Problem MAXIMUS (729. Move your armies)
	318. Problem IVAN (734. Ivan and his interesting game)
	319. Problem MDST (735. Minimum Diameter Spanning Tree)
	320. Problem TREE (738. Another Counting Problem)
	321. Problem NEG2 (739. The Moronic Cowmpouter)
	322. Problem TRT (740. Treats for the Cows)
	323. Problem STEAD (741. Steady Cow Assignment)
	324. Problem LPERMUT (744. Longest Permutation)
	325. Problem TEM (757. Thermal Luminescence)
	326. Problem CH3D (760. Convex Hull 3D)
	327. Problem MIS (764. Delay-noise Analysis)
	328. Problem ARCHPLG (780. The Archipelago)
	329. Problem TRIOPT (827. Trigonometric optimization)
	330. Problem OPTM (839. Optimal Marks)
	331. Problem WM06 (850. Soccer Choreography)
	332. Problem SWAPS (861. Counting inversions)
	333. Problem DNA (866. DNA Translation)
	334. Problem CUBES (867. Perfect Cubes)
	335. Problem IMPORT (869. Galactic Import)
	336. Problem BASE (870. Basically Speaking)
	337. Problem SEQUENCE (871. Letter Sequence Analysis)
	338. Problem MARKUP (872. Mark-up)
	339. Problem TRANSMIT (898. Transmitters)
	340. Problem WSCIPHER (899. Ws Cipher)
	341. Problem SPLIT (900. Split Windows)
	342. Problem INDEXGEN (901. Index Generation)
	343. Problem HANGOVER (902. Hangover)
	344. Problem DOUBLEVI (903. Double Vision)
	345. Problem IMAGE (904. Image Perimeters)
	346. Problem MATRIX2 (912. Submatrix of submatrix)
	347. Problem QTREE2 (913. Query on a tree II)
	348. Problem FTOUR (944. Free Tour)
	349. Problem IM (962. Intergalactic Map)
	350. Problem EN (964. Entrapment)
	351. Problem PB (967. Parking Bay)
	352. Problem BIRTHDAY (972. Birthday)
	353. Problem MOBILE (987. Mobile)
	354. Problem MATRIOSH (999. Generalized Matrioshkas)
	355. Problem EQDIV (1000. Equidivisions)
	356. Problem BROUL (1001. Babylonian Roulette)
	357. Problem UJ (1002. Uncle Jack)
	358. Problem QUILT (1003. Little Quilt)
	359. Problem POLYCODE (1004. Polygon Encoder)
	360. Problem AIBOHP (1021. Aibohphobia)
	361. Problem ANGELS (1022. Angels and Devils)
	362. Problem COMCB (1024. Complete Chess Boards)
	363. Problem FASHION (1025. Fashion Shows)
	364. Problem FAVDICE (1026. Favorite Dice)
	365. Problem FPOLICE (1027. Fool the Police)
	366. Problem HUBULLU (1028. Hubulullu)
	367. Problem MATSUM (1029. Matrix Summation)
	368. Problem EIGHTS (1030. Triple Fat Ladies)
	369. Problem UPSUB (1031. Up Subsequence)
	370. Problem GSS1 (1043. Can you answer these queries I)
	371. Problem CTRICK (1108. Card Trick)
	372. Problem SUDOKU (1110. Sudoku)
	373. Problem NSTEPS (1112. Number Steps)
	374. Problem TOE1 (1161. Tic-Tac-Toe ( I ))
	375. Problem TOE2 (1162. Tic-Tac-Toe ( II ))
	376. Problem JAVAC (1163. Java vs C ++)
	377. Problem DEADFR (1166. Dead Fraction)
	378. Problem MINCOUNT (1167. Move To Invert)
	379. Problem SORTBIT (1182. Sorted bit squence)
	380. Problem PALACE (1183. Accomodate the palace)
	381. Problem ORIGLIFE (1267. Origin of Life)
	382. Problem CNEASY (1268. CN Tower (Easy))
	383. Problem CNHARD (1269. CN Tower (Hard))
	384. Problem PNTBYNUM (1270. Paint By Numbers)
	385. Problem SUMFOUR (1296. 4 values whose sum is 0)
	386. Problem PARTSUM (1325. Partial Sums)
	387. Problem CHASE (1326. A Chase In WonderLand)
	388. Problem KPMATRIX (1329. Matrix)
	389. Problem KPMAZE (1335. Maze)
	390. Problem CZ_PROB1 (1391. Summing to a Square Prime)
	391. Problem EMP (1417. University Employees)
	392. Problem CATM (1418. The Cats and the Mouse)
	393. Problem NGM (1419. A Game with Numbers)
	394. Problem GEOM (1420. Geometry and a Square)
	395. Problem FIRM (1421. Goods)
	396. Problem KPPOLY (1431. Projections Of A Polygon)
	397. Problem KPSUM (1433. The Sum)
	398. Problem KPEQU (1434. Equation)
	399. Problem PT07X (1435. Vertex Cover)
	400. Problem PT07Y (1436. Is it a tree)
	401. Problem PT07Z (1437. Longest path in a tree)
	402. Problem ARCTAN (1440. Use of Function Arctan)
	403. Problem CLEVER (1441. The Clever Typist)
	404. Problem CHAIN (1442. Strange Food Chain)
	405. Problem DELCOMM2 (1444. DEL Command II)
	406. Problem BRCKGAME (1447. A Game of Toy Bricks)
	407. Problem COVER2 (1448. 3D Cover)
	408. Problem SEQ1 (1451. 01 Sequence)
	409. Problem CAKE (1452. Birthday Cake)
	410. Problem OPTSUB (1453. Optimal Connected Subset)
	411. Problem MEMDIS (1454. Memory Distribution)
	412. Problem ANALYSER (1455. Program Analyser)
	413. Problem BLUEEQ (1457. Help Blue Mary Please! (Act I))
	414. Problem BLUEEQ2 (1458. Help Blue Mary Please! (Act II))
	415. Problem AEROLITE (1459. The Secret of an Aerolite)
	416. Problem GALAXY (1460. A Simple Calculator in the Galaxy)
	417. Problem DRAGON (1461. Greedy Hydra)
	418. Problem BARB (1462. Barbarians)
	419. Problem ROBOT (1463. Robot Number M)
	420. Problem EDIT3 (1464. Editor II)
	421. Problem CHRIS (1465. On the Way to Find Chris)
	422. Problem CASHIER (1466. Blue Mary Needs Help Again)
	423. Problem RAIN2 (1468. Outside it is now raining)
	424. Problem SEQ2 (1470. Another Sequence Problem)
	425. Problem PRLGAME (1471. A Game of Pearls)
	426. Problem TOMJERRY (1472. Tom and Jerry)
	427. Problem LEMON (1473. Lemon Tree in the Moonlight)
	428. Problem WORMS (1475. VII - Act IV)
	429. Problem PROFIT (1476. Maximum Profit)
	430. Problem PT07A (1477. Play with a Tree)
	431. Problem PT07B (1478. The Easiest Problem)
	432. Problem PT07C (1479. The GbAaY Kingdom)
	433. Problem PT07D (1480. Let us count 1 2 3)
	434. Problem PT07F (1482. A short vacation in Disneyland)
	435. Problem PT07G (1483. Colorful Lights Party)
	436. Problem PT07H (1484. Search in XML)
	437. Problem PT07J (1487. Query on a tree III)
	438. Problem PT07K (1488. Balloons of JiaJia)
	439. Problem MOLE (1505. Whac-a-Mole)
	440. Problem RSORTING (1526. Ranklist Sorting)
	441. Problem BLUEEQ3 (1536. Help Blue Mary Please! (Act III))
	442. Problem MKJUMPS (1538. Making Jumps)
	443. Problem MOBILE2 (1552. Mobiles)
	444. Problem BACKUP (1553. Backup Files)
	445. Problem ZOO (1554. Zoo)
	446. Problem GSS2 (1557. Can you answer these queries II)
	447. Problem TREEOI14 (1644. Trees)
	448. Problem AMATH (1671. Another Mathematical Problem)
	449. Problem GIWED (1672. The Great Indian Wedding)
	450. Problem AMBM (1673. Ambitious Manager)
	451. Problem EXPLOSN (1674. The Explosion)
	452. Problem FUSION (1675. Fusion Cube)
	453. Problem GEN (1676. Text Generator)
	454. Problem HALLOW (1677. Halloween treats)
	455. Problem TREASURY (1678. Royal Treasury)
	456. Problem CYLINDER (1681. Cylinder)
	457. Problem EXPRESS (1683. Expressions)
	458. Problem FREQUENT (1684. Frequent values)
	459. Problem GROCERY (1685. Grocery store)
	460. Problem LOGIC2 (1687. Logic II)
	461. Problem EASYPROB (1688. A Very Easy Problem!)
	462. Problem HARDP (1689. Hard Problem)
	463. Problem COCONUTS (1693. Coconuts)
	464. Problem GRC (1695. Grandpa’s Rubik Cube)
	465. Problem WIJGT (1696. Will Indiana Jones Get There)
	466. Problem OFORTUNE (1697. Ohgas’ Fortune)
	467. Problem PLSEARCH (1698. Polygonal Line Search)
	468. Problem NSYSTEM (1699. Numeral System)
	469. Problem TRSTAGE (1700. Traveling by Stagecoach)
	470. Problem EOWAMRT (1701. Earth Observation with a Mobile Robot Team)
	471. Problem CLEANRBT (1702. Cleaning Robot)
	472. Problem ACMAKER (1703. ACM (ACronymMaker))
	473. Problem CDOWN (1704. Countdown)
	474. Problem GAMEFIL (1705. The Game of Efil)
	475. Problem QKP (1706. Queens, Knights and Pawns)
	476. Problem RELINETS (1707. Reliable Nets)
	477. Problem SQCOUNT (1708. Square Count)
	478. Problem SWTHIN (1709. Swamp Things)
	479. Problem TWENDS (1710. Two Ends)
	480. Problem PRMLX (1712. Permalex)
	481. Problem SCALE (1713. Funny scales)
	482. Problem NCKLCE (1715. Another Necklace Problem)
	483. Problem GSS3 (1716. Can you answer these queries III)
	484. Problem RP (1722. Life, the Universe, and Everything II)
	485. Problem BMJ (1723. Bee Maja)
	486. Problem TRICOUNT (1724. Counting Triangles)
	487. Problem IMPORT1 (1725. The Importance)
	488. Problem EXCHANGE (1726. Exchange)
	489. Problem CPRMT (1728. Common Permutation)
	490. Problem TCOUNT2 (1730. Counting Triangles II)
	491. Problem TCOUNT3 (1731. Counting Triangles III)
	492. Problem EQU2 (1739. Yet Another Equation)
	493. Problem GERRYMDR (1740. Gerrymandering)
	494. Problem TETRIS3D (1741. Tetris 3D)
	495. Problem POLEVAL (1744. Evaluate the polynomial)
	496. Problem SEQPAR2 (1748. Sequence Partitioning II)
	497. Problem DIVSUM2 (1754. Divisor Summation (Hard))
	498. Problem NQUEEN (1771. Yet Another N-Queen Problem)
	499. Problem DETER2 (1772. Find The Determinant II)
	500. Problem ALL (1774. All Discs Considered)
	501. Problem BOOLE (1775. Boolean Logic)
	502. Problem DNALAB (1776. DNA Laboratory)
	503. Problem ICAMPSEQ (1784. IOICamp Sequence)
	504. Problem CODE (1785. Code)
	505. Problem DANGER (1786. In Danger)
	506. Problem ENCONDIN (1787. Run Length Encoding)
	507. Problem FRACTAN (1788. Fractan)
	508. Problem GREEDULM (1789. Huffmanś Greed)
	509. Problem HEAPULM (1790. Binary Search Heap Construction)
	510. Problem GEN2 (1793. Text Generater II)
	511. Problem DRAGON2 (1794. Greedy Hydra II)
	512. Problem CARD (1797. Cardsharper)
	513. Problem ASSIST (1798. Assistance Required)
	514. Problem BOTTOM (1799. The Bottom of a Graph)
	515. Problem CONTEST (1800. Fixed Partition Contest Management)
	516. Problem DRINK (1801. Drink, on Ice)
	517. Problem EDGE (1802. Edge)
	518. Problem FOLD (1803. Fold)
	519. Problem GENETIC (1804. Genetic Code)
	520. Problem HISTOGRA (1805. Largest Rectangle in a Histogram)
	521. Problem ORZ (1810. Nuclear Plants)
	522. Problem LCS (1811. Longest Common Substring)
	523. Problem LCS2 (1812. Longest Common Substring II )
	524. Problem WA (1815. Problems Collection (Volume X))
	525. Problem FTOUR2 (1825. Free tour II)
	526. Problem SUDOKU2 (1833. Sudoku)
	527. Problem SETSTACK (1835. The SetStack Computer)
	528. Problem PIE (1837. Pie)
	529. Problem TICKET (1838. Ticket to Ride)
	530. Problem BOOKCASE (1839. The Bookcase)
	531. Problem PQUEUE (1840. Printer Queue)
	532. Problem PPATH (1841. Prime Path)
	533. Problem LINELAND (1842. Lineland Airport)
	534. Problem LEONARDO (1843. Leonardo Notebook)
	535. Problem MICEMAZE (1845. Mice and Maze)
	536. Problem PFDEP (1846. Project File Dependencies)
	537. Problem NOCHANGE (1847. No Change)
	538. Problem MKWAVES (1865. Making Waves)
	539. Problem MKPALS (1866. Making Pals)
	540. Problem MKMONEY (1868. Making Money)
	541. Problem MKMOOM (1869. Making Mountains Out Of Molehills)
	542. Problem MKLABELS (1870. Making Labels)
	543. Problem MKBUDGET (1871. Making A Budget)
	544. Problem ACARGO (1873. Accumulate Cargo)
	545. Problem BWHEELER (1874. Burrows Wheeler Precompression)
	546. Problem COOLNUMS (1875. Cool Numbers)
	547. Problem DRAGONCU (1876. Dragon Curves)
	548. Problem EPURSE (1877. Enrich my purse)
	549. Problem FCATTLE (1878. Farmers Cattle)
	550. Problem GAMETIME (1879. Game Time)
	551. Problem HANOICAL (1880. Hanoi Calls)
	552. Problem ICODER (1881. Instruction Decoder)
	553. Problem RECTANGL (1960. Rectangles)
	554. Problem ROMANRDS (1961. Roman Roads)
	555. Problem CIRCLES (1962. Circles)
	556. Problem IMGPROJ (1963. Image Projections)
	557. Problem MMCUT (1964. Tree cut)
	558. Problem SETCOV (1965. Set Cover)
	559. Problem SKIVALL (1966. Ski Valley)
	560. Problem ACFRAC (1991. Another Continuous Fractions Problem)
	561. Problem BOX (2000. Boxes (Hard))
	562. Problem RNG (2002. Random Number Generator)
	563. Problem MINUS (2005. Minus Operation)
	564. Problem BALIFE (2006. Load Balancing)
	565. Problem COUNT (2007. Another Very Easy Problem! WOW!!!)
	566. Problem BACKPACK (2008. Dab of Backpack)
	567. Problem CRYPTO (2009. Cryptography)
	568. Problem ROLLBALL (2019. The Rolling Ball)
	569. Problem PEBBMOV (2021. Moving Pebbles)
	570. Problem TRUTHORL (2022. Truth Or Lie)
	571. Problem ONEINSTR (2023. One Instruction Computer Simulator)
	572. Problem YKH (2031. Please help You-Know-Who)
	573. Problem TILING (2038. Rectangle Tiling)
	574. Problem REMGAME (2047. Stone Removing Game)
	575. Problem CERC07B (2050. Strange Billboard)
	576. Problem CERC07C (2051. Cell Phone)
	577. Problem CERC07H (2052. Hexagonal Parcels)
	578. Problem CERC07K (2053. Key Task)
	579. Problem CERC07L (2054. Gates of Logic)
	580. Problem CERC07N (2055. Weird Numbers)
	581. Problem CERC07P (2056. Rectangular Polygon)
	582. Problem CERC07R (2058. Reaux! Sham! Beaux!)
	583. Problem CERC07S (2059. Robotic Sort)
	584. Problem CERC07W (2060. Tough Water Level)
	585. Problem MINDIST (2070. Minimum Distance)
	586. Problem CANDY (2123. Candy I)
	587. Problem FCTRL4 (2124. Last Non-Zero Digit of Factorials)
	588. Problem LABYR2 (2125. Number Labyrinth)
	589. Problem PANEL (2126. Panel)
	590. Problem RAIN3 (2127. Rain)
	591. Problem KROW (2128. K-In-A-Row)
	592. Problem CAKE2 (2129. Cake)
	593. Problem TROLLS (2130. Trolls)
	594. Problem GETBACK (2131. Get Back!)
	595. Problem PUZZLE2 (2132. Puzzle)
	596. Problem CANDY2 (2136. Candy II)
	597. Problem PIB (2138. Pibonacci)
	598. Problem GOSSIPER (2139. Gossipers)
	599. Problem FAIRONOT (2140. (un)Fair Play)
	600. Problem GARDEN (2141. Golden Garden)
	601. Problem DEPEND (2143. Dependency Problems)
	602. Problem ROOT (2147. Root of a Linear Equation)
	603. Problem CANDY3 (2148. Candy III)
	604. Problem BAISED (2149. Biased Standings)
	605. Problem SUBSEQ (2150. Counting Subsequences)
	606. Problem CALCULAT (2151. Digital Calculator)
	607. Problem FRACTAL (2152. Hilbert Curve)
	608. Problem IMATCH (2153. Internet is Faulty)
	609. Problem KRUSKAL (2154. Kruskal)
	610. Problem ABSYS (2157. Anti-Blot System)
	611. Problem CAKE3 (2159. Delicious Cake)
	612. Problem HERE (2160. Here-There)
	613. Problem JPIX (2161. Pixel Shuffle)
	614. Problem TOWER (2162. Towers of Powers)
	615. Problem AMCODES (2171. Ambiguous Codes)
	616. Problem EMOTICON (2175. Emoticons)
	617. Problem MUSIC (2185. Musical Optimization)
	618. Problem MKPAIRS (2189. Making Pairs)
	619. Problem TAN1 (2202. Tan and His Interesting Game)
	620. Problem BALLOON (2270. Balloons in a Box)
	621. Problem UCODES (2271. Undecodable Codes)
	622. Problem DESERT (2272. Crossing the Desert)
	623. Problem FERRY (2273. Ferries)
	624. Problem ISLHOP (2274. Island Hopping)
	625. Problem OIL (2275. Toil for Oil)
	626. Problem RECTNG2 (2276. Partitions)
	627. Problem SSORT (2277. Silly Sort)
	628. Problem LEXBRAC (2317. Bracket Sequence)
	629. Problem WORDS (2318. Overlapping Words)
	630. Problem BIGSEQ (2319. Sequence)
	631. Problem DISTANCE (2320. Manhattan)
	632. Problem SEGMENTS (2321. Segments)
	633. Problem TREEGAME (2322. Tree Game)
	634. Problem COMPASS (2323. Broken Compass)
	635. Problem MARIOGAM (2324. Mario)
	636. Problem STRDIST (2325. String Distance)
	637. Problem LIS2 (2371. Another Longest Increasing Subsequence Problem)
	638. Problem ARRANGE (2412. Arranging Amplifiers)
	639. Problem BUILD (2413. Building Beacons)
	640. Problem CCOST (2414. Calculate The Cost)
	641. Problem RESIST (2415. Kirchhof Law)
	642. Problem DSUBSEQ (2416. Distinct Subsequences)
	643. Problem ENEMY (2417. Eliminate The Enemies)
	644. Problem FFROG (2418. Flying Frogs)
	645. Problem GLGRID (2419. G-Line Grid)
	646. Problem HHAND (2420. Hospital at Hands)
	647. Problem ININT (2421. Incrementing The Integer)
	648. Problem JAZZYJOB (2422. Jazzy Job)
	649. Problem MINTRIAN (2423. Minimal Triangulations of Graphs)
	650. Problem PLD (2426. Palindromes)
	651. Problem RABBIT1 (2450. Counting Rabbits)
	652. Problem PHONELIN (2485. Phone Lines)
	653. Problem MAGIC4 (2511. Magic Program IV)
	654. Problem GNY07A (2523. Mispelling)
	655. Problem GNY07B (2524. Conversions)
	656. Problem GNY07C (2525. Encoding)
	657. Problem GNY07D (2526. Decoding)
	658. Problem GNY07E (2527. Flipping Burned Pancakes)
	659. Problem GNY07F (2528. Monkey Vines)
	660. Problem GNY07G (2529. Model Rocket Height)
	661. Problem GNY07H (2530. Tiling a Grid With Dominoes)
	662. Problem GNY07I (2531. Spatial Concepts Test)
	663. Problem PERMUT3 (2565. Another Permutation Problem)
	664. Problem CLK (2631. Chomp)
	665. Problem SC1 (2643. Starcraft I)
	666. Problem KPARCH (2648. Archiver)
	667. Problem KPSORT (2649. Weird sorting)
	668. Problem WAR (2658. Art of War)
	669. Problem EXAMPLE (2660. Example)
	670. Problem ILLUM (2661. Illumination)
	671. Problem PUTIN (2662. Put a Point in a Hyperspace)
	672. Problem QTREE4 (2666. Query on a tree IV)
	673. Problem POLYSSQ (2668. Polygon)
	674. Problem MSTS (2670. Count Minimum Spanning Trees)
	675. Problem SPP (2699. Recursive Sequence (Version II))
	676. Problem UNTITLED (2709. Untitled Problem)
	677. Problem COWCAR (2714. Cow Cars)
	678. Problem GLASNICI (2715. Glasnici)
	679. Problem QUADAREA (2716. Maximal Quadrilateral Area)
	680. Problem ARMY (2727. Army Strength)
	681. Problem BREAK (2728. Breaking in)
	682. Problem INVENT (2731. Inventing Test Data)
	683. Problem KEQ (2733. K Equal Digits)
	684. Problem LARGE (2734. Large party)
	685. Problem RAIL (2735. Simplify the Railroad System)
	686. Problem PRHYME (2737. Perfect Rhyme)
	687. Problem SUMSUMS (2742. Summing Sums)
	688. Problem PRETILE (2743. Prefix Tiling)
	689. Problem INCSEQ (2815. Increasing Subsequences)
	690. Problem CSUBSEQS (2816. Common Subsequences)
	691. Problem INCDSEQ (2817. Distinct Increasing Subsequences)
	692. Problem RRSCHED (2826. Round-Robin Scheduling)
	693. Problem TLE (2829. Time Limit Exceeded)
	694. Problem DETER3 (2832. Find The Determinant III)
	695. Problem SDGAME (2833. Super Dice Game)
	696. Problem MLE (2835. Memory Limit Exceeded)
	697. Problem BROKEN (2852. Broken Keyboard)
	698. Problem PDECODE (2853. Decode the Strings)
	699. Problem FOREST2 (2855. Forest)
	700. Problem HELPBOB (2856. Help Bob)
	701. Problem SDGAME2 (2877. Another understanding of Super Dice Game)
	702. Problem KNIGHTS (2878. Knights of the Round Table)
	703. Problem DOCTOR (2879. The Cow Doctor)
	704. Problem WILD (2880. Wild West)
	705. Problem CLONE (2881. Find the Clones)
	706. Problem WARE (2882. The Warehouse)
	707. Problem WIDGET (2883. Widget Factory)
	708. Problem MARTIAN (2884. Martian Mining)
	709. Problem WORDRING (2885. Word Rings)
	710. Problem PARTY2 (2898. Party of Cloaked Killers)
	711. Problem VOL (2899. Volunteers)
	712. Problem GEOPROB (2901. One Geometry Problem)
	713. Problem TRANSP1 (2903. Transportation)
	714. Problem NOTATRI (2905. Not a Triangle)
	715. Problem GCD2 (2906. GCD2)
	716. Problem GSS5 (2916. Can you answer these queries V)
	717. Problem QTREE5 (2939. Query on a tree V)
	718. Problem UNTITLE1 (2940. Untitled Problem II)
	719. Problem SHOOTING (2944. Emmons)
	720. Problem ECLIPSE (2946. Eclipse)
	721. Problem PAINTBLK (2962. Painting Blocks (Act I))
	722. Problem PAINTBLC (2963. Painting Blocks (Act II))
	723. Problem ELECTRO (3002. Electrophoretic)
	724. Problem FILTER (3003. Median Filter)
	725. Problem LIFEGAME (3004. Life Game)
	726. Problem LAND (3005. Subdividing a Land)
	727. Problem LINE (3006. Connect Line Segments)
	728. Problem OILCOMP (3007. Oil Company)
	729. Problem RPS (3008. Finding the Top RPS Player)
	730. Problem VORONOI (3009. Revenge of Voronoi)
	731. Problem WALL (3010. Castle Wall)
	732. Problem SOLDIER (3033. Help the soldier)
	733. Problem SEQ5 (3070. How many subsequences)
	734. Problem MOD (3105. Power Modulo Inverted)
	735. Problem DICTSUB (3106. Dictionary Subsequences)
	736. Problem ODDDIV (3107. Odd Numbers of Divisors)
	737. Problem GRAPHGAM (3108. Charlesbert and Merangelou)
	738. Problem STRLCP (3109. Longest Common Prefix)
	739. Problem PALNUM (3110. Palindromic Number)
	740. Problem STABARDS (3111. Stabards)
	741. Problem STSTRING (3112. Strings)
	742. Problem GORELIAN (3133. Here We Go(relians) Again)
	743. Problem PERMSG (3166. Permutation Exponentiation)
	744. Problem LINES (3184. Game of Lines)
	745. Problem DOORSPEN (3195. Doors and Penguins)
	746. Problem PALIM (3208. Yet Another Longest Palindrome Problem)
	747. Problem TYPESET (3249. Typesettin)
	748. Problem SLINK (3251. Slink)
	749. Problem EDS (3253. Electronic Document Security)
	750. Problem GUARD (3254. Guard)
	751. Problem RACETIME (3261. Race Against Time)
	752. Problem SA04C (3305. Roman Patrollers)
	753. Problem SA04D (3306. Very Special Boxes )
	754. Problem HEXTILE (3307. Hex Tile Equations)
	755. Problem BRIDGES2 (3308. The Bridges of San Mochti)
	756. Problem BULLETIN (3309. Bulletin Board)
	757. Problem SERIALN (3310. Serial Numbers)
	758. Problem UMNOZAK (3314. Umnozak)
	759. Problem DOUBLE (3322. Doubled Numbers)
	760. Problem HIGHWAY (3347. Cestarine)
	761. Problem STACK (3359. Stack)
	762. Problem IMGREC2 (3360. Digital Image Recognition)
	763. Problem SVADA (3363. Svada)
	764. Problem ROUNDT (3372. Round Table)
	765. Problem PERMCODE (3373. Permutation Code)
	766. Problem SCAVHUNT (3374. Scavenger Hunt)
	767. Problem STAMPS (3375. Stamps)
	768. Problem PARKINGL (3376. Parking Lot)
	769. Problem BUGLIFE (3377. A Bug’s Life)
	770. Problem MIRRORED (3378. Mirrored Pairs)
	771. Problem SSHUFFLE (3379. String Shuffle)
	772. Problem TOURIST (3380. Tourist)
	773. Problem HIGHWAYS (3381. Highways)
	774. Problem MONSTER (3382. Monster Trap)
	775. Problem YODA (3385. Yoda Goes Palindromic !)
	776. Problem QUALITY (3386. Contest System Quality Assurance Tester)
	777. Problem CHMAZE (3387. Changing Maze)
	778. Problem DNPALIN (3388. Double Near Palindromes)
	779. Problem KNIGHTSR (3389. The Knights of the Round Circle)
	780. Problem TRIBE2 (3390. Tribe Council)
	781. Problem NOTOKNOT (3393. Knot or Not)
	782. Problem LAGRANGE (3394. Lagrange’s Four-Square Theorem)
	783. Problem SAMER08A (3405. Almost Shortest Path)
	784. Problem SAMER08B (3406. Bases)
	785. Problem SAMER08C (3407. Candy)
	786. Problem SAMER08D (3408. DNA Sequences)
	787. Problem SAMER08E (3409. Electricity)
	788. Problem SAMER08F (3410. Feynman)
	789. Problem SAMER08G (3411. Pole Position)
	790. Problem SAMER08H (3412. Higgs Boson)
	791. Problem SAMER08I (3413. Traveling Shoemaker Problem)
	792. Problem SAMER08J (3414. Bora Bora)
	793. Problem SAMER08K (3415. Shrinking Polygons)
	794. Problem FALLINGI (3420. Falling Ice)
	795. Problem OROSNAKE (3426. Ouroboros Snake)
	796. Problem HIST2 (3436. Histogram)
	797. Problem LASTDIG (3442. The last digit)
	798. Problem CEPC08B (3459. SkyScrapers)
	799. Problem RAMP (3462. The Skateparkś New Ramps)
	800. Problem DRIVE (3465. Drive through MegaCity)
	801. Problem DEPOSIT (3476. Deposit)
	802. Problem BABY (3477. Baby)
	803. Problem BEGIN (3483. Begin)
	804. Problem CROSSBIT (3484. Crossbits)
	805. Problem ELIM (3486. Elimination)
	806. Problem TOPCODE (3488. The Top-Code)
	807. Problem HIDTRI (3490. Hidden Triangle)
	808. Problem BRAILLE (3492. Braille Transcription)
	809. Problem NBLTHIEF (3495. The Nobel Thief)
	810. Problem MATRICA (3543. Matrica)
	811. Problem BST (3544. Binary Search Tree)
	812. Problem NAJKRACI (3545. Najkraci)
	813. Problem BOYSCOUT (3576. Boy Scouts)
	814. Problem PARITY (3577. Parity)
	815. Problem HASH (3578. Hashing)
	816. Problem DISJPATH (3579. Disjoint Paths)
	817. Problem COMPANY (3580. Company)
	818. Problem TREESIM (3581. Tree Similarity)
	819. Problem RSTAURNT (3582. Restaurant Tab)
	820. Problem PATHEADS (3591. Patting Heads)
	821. Problem CATTLEB (3678. Cattle Bruisers)
	822. Problem MOOPIZZA (3679. Moo University - Emergency Pizza Order)
	823. Problem KGSS (3693. Maximum Sum)
	824. Problem PROOT (3713. Primitive Root)
	825. Problem SNOOKER (3723. Snooker)
	826. Problem RAINBOW (3724. Rainbow Ride)
	827. Problem TREX (3725. Taming a T-REX)
	828. Problem SUBSUMS (3749. Subset Sums)
	829. Problem GEORGE (3763. George)
	830. Problem STREET (3791. Street)
	831. Problem LUBEN (3831. Lubenica)
	832. Problem KRUS (3832. Kruska)
	833. Problem TRES (3833. Tresnja)
	834. Problem VCIRCLES (3863. Area of circles)
	835. Problem RELJEF (3865. Reljef)
	836. Problem VPALIN (3866. Finding Palindromes)
	837. Problem VBOSS (3867. Who is The Boss)
	838. Problem VMILI (3870. Military Story)
	839. Problem GCDEX (3871. GCD Extreme)
	840. Problem VPARTY (3872. Party At School)
	841. Problem WHEN (3884. When (You Believe))
	842. Problem BOBALLS (3894. Bouncing Balls)
	843. Problem BYTESE1 (3920. Lucius Dungeon)
	844. Problem BYTESE2 (3921. The Great Ball)
	845. Problem BYTESM1 (3922. Mystical River)
	846. Problem BYTESM2 (3923. Philosophers Stone)
	847. Problem BYTESH1 (3924. Filchs Dilemna)
	848. Problem FROGGER (3999. FROGGER)
	849. Problem GALLUP (4000. GALLUP)
	850. Problem SUBWAYPL (4003. Subway planning)
	851. Problem CPU (4004. Exploding CPU)
	852. Problem PHONELST (4033. Phone List)
	853. Problem CUCKOO (4036. Cuckoo Hashing)
	854. Problem KPGAME (4060. A game with probability)
	855. Problem MORPH (4069. Morphing is Fun)
	856. Problem TWOPROF (4070. Two Professors)
	857. Problem EPALIN (4103. Extend to Palindrome)
	858. Problem FASTFLOW (4110. Fast Maximum Flow)
	859. Problem ELLIPSE (4142. Ellipse)
	860. Problem DOMINO2 (4157. Domino)
	861. Problem HS08PAUL (4164. A conjecture of Paul Erdős)
	862. Problem HS08FOUR (4166. Four colors)
	863. Problem SQFREE (4168. Square-free integers)
	864. Problem DROOT (4172. Multiplicative digital root)
	865. Problem KPURSUIT (4176. A Knightly Pursuit)
	866. Problem HERDING (4177. Herding)
	867. Problem LATTICE (4178. Distance on a square lattice)
	868. Problem TEMPTISL (4179. Temptation Island)
	869. Problem FCANDY (4182. Candy (Again))
	870. Problem CCCCUBE (4185. Cube)
	871. Problem HS08CODE (4186. Break a New RSA system)
	872. Problem HS08EQ (4188. Amazing equality)
	873. Problem LANDING (4189. Landing)
	874. Problem DOMINOES (4197. Dominoes)
	875. Problem LEGO (4198. Lego)
	876. Problem HAMSTER1 (4200. Hamster flight)
	877. Problem RATING (4201. Coder Ratings)
	878. Problem BRPAR (4202. Brackets Parade)
	879. Problem MATCHING (4206. Fast Maximum Matching)
	880. Problem QUEEN (4235. Wandering Queen)
	881. Problem TTTABLE (4273. Train TimeTable)
	882. Problem AE3A (4305. Drilling)
	883. Problem VOTE (4323. Voting Districts)
	884. Problem EVERLAST (4324. The fate of the pineapple)
	885. Problem EBOXES (4343. Empty Boxes)
	886. Problem MATRIX1 (4357. Enter the Matrix)
	887. Problem DAGCNT (4407. Counting Arborescence)
	888. Problem FENCE1 (4408. Build a Fence)
	889. Problem AREA1 (4409. Circle vs Triangle)
	890. Problem REPAIR1 (4410. Repair the Door)
	891. Problem EXPR3 (4411. Counting Expressions)
	892. Problem FACTOR1 (4412. Factorization, Factorization, Factorization)
	893. Problem GEM (4413. Gem)
	894. Problem HIGHWAY1 (4414. Highway)
	895. Problem INTEGER1 (4415. Power of Integer)
	896. Problem JUMP1 (4416. Jumping Hands)
	897. Problem KPGRAPHS (4420. Counting Graphs)
	898. Problem GF2 (4421. Irreducible polynomials over GF2)
	899. Problem MIB (4429. Spelling Lists)
	900. Problem ARITH2 (4452. Simple Arithmetics II)
	901. Problem BOBALLS2 (4453. Bouncing Balls II)
	902. Problem BRCKTS2 (4454. Brackets II)
	903. Problem MOVIE (4455. Going to the Movies)
	904. Problem AIRLINES (4456. Jumbo Airlines)
	905. Problem SHOP2 (4457. Shopping II)
	906. Problem TITATO (4460. Tic Tac Toe - Best Move)
	907. Problem ANTTT (4465. The Ant)
	908. Problem PLAYFAIR (4476. Playfair Cracker)
	909. Problem EXPR4 (4478. Counting Expressions II)
	910. Problem GSS6 (4487. Can you answer these queries VI)
	911. Problem PGCD (4491. Primes in GCD Table)
	912. Problem MAGIC1 (4492. Magic1)
	913. Problem EQUAD1 (4493. Equation)
	914. Problem UCI2009B (4523. Binomial Coefficients)
	915. Problem UCI2009D (4525. Digger Octaves)
	916. Problem FROGS (4528. Frog Wrestling)
	917. Problem BANDMATR (4533. Determinant of Banded Matrices)
	918. Problem ANARC08A (4546. Tobo or not Tobo)
	919. Problem ANARC08B (4549. Adding Sevens)
	920. Problem ANARC08C (4551. Match Maker)
	921. Problem ANARC08D (4552. Adding up Triangles)
	922. Problem ANARC08E (4554. Relax! It is just a game)
	923. Problem ANARC08F (4555. Einbahnstrasse)
	924. Problem ANARC08G (4556. Think I will Buy Me a Football Team)
	925. Problem ANARC08H (4557. Musical Chairs)
	926. Problem ANARC08I (4558. I Speak Whales)
	927. Problem ANARC08J (4559. A Day at the Races)
	928. Problem LQDRECT (4566. Đe^’m hinh chu+~ nhât)
	929. Problem CYCLERUN (4574. Riding in cycles)
	930. Problem ABCDEF (4580. ABCDEF)
	931. Problem GCJ08C (4585. Star Wars)
	932. Problem WLOO0707 (4586. Texas Trip)
	933. Problem FENCE3 (4587. Electric Fences)
	934. Problem NWERC04H (4588. SETI)
	935. Problem PMATRIX (4644. Proving Equivalences)
	936. Problem CCROSS (4656. Cross Mountain Climb)
	937. Problem GASWARS (4657. Gas Wars)
	938. Problem HHEMANT (4658. Help Hemant Verma)

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