Online JudgeProblem SetAuthorsOnline ContestsUser
Web Board
Home Page
F.A.Qs
Statistical Charts
Problems
Submit Problem
Online Status
Prob.ID:
Register
Update your info
Authors ranklist
Current Contest
Past Contests
Scheduled Contests
Award Contest
User ID:
Password:
  Register

Volume 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31

Language:
Search: IN   Find problems that your team haven't solved
IDTitleRatio(AC/submit) Date
2500Pia's Party22%(517/2281)Apr 3, 2026
2501Average Speed44%(2461/5479)Apr 13, 2026
2502Subway31%(6448/20451)Apr 3, 2026
2503Babelfish39%(30540/78246)Apr 12, 2026
2504Bounding box39%(662/1683)Dec 9, 2025
2505A multiplication game49%(4092/8219)Apr 3, 2026
2506Tiling42%(7976/18664)Apr 13, 2026
2507Crossed ladders37%(2185/5773)Nov 20, 2025
2508Conic distance41%(1010/2452)Nov 20, 2025
2509Peter's smokes41%(7729/18785)Apr 3, 2026
2510Tullia and Chocolate II20%(381/1859)Jan 7, 2026
2511The Top Shelf27%(421/1524)Jan 9, 2026
2512Chessboard in FEN40%(380/941)Dec 9, 2025
2513Colored Sticks25%(11687/45360)Apr 3, 2026
2514Ridiculous Addition21%(429/2037)Dec 9, 2025
2515Birthday Cake36%(434/1173)Mar 22, 2026
2516Minimum Cost35%(7745/21946)Mar 6, 2026
2517Cover12%(28/231)Mar 6, 2026
2518Little guys' game29%(183/615)Mar 22, 2026
2519Cutting Necklace12%(179/1396)Apr 3, 2026
2520DNA Sequence Alignment11%(312/2777)Mar 27, 2026
2521How much did the businessman lose62%(8493/13657)Apr 3, 2026
2522Partitioning for fun and profit31%(316/1005)Mar 21, 2026
2523ASCII Labyrinth37%(164/434)Dec 9, 2025
2524Ubiquitous Religions45%(26505/58194)Apr 12, 2026
2525Text Formalization20%(253/1249)Nov 25, 2025
2526Center of symmetry44%(1181/2637)Nov 21, 2025
2527Polynomial Remains56%(835/1482)Nov 25, 2025
2528Mayor's posters28%(30891/109441)Apr 9, 2026
2529Queuing at the doctors34%(201/585)Apr 3, 2026
2530Tetris Alphabet41%(577/1405)Apr 3, 2026
2531Network Saboteur51%(10186/19963)Apr 3, 2026
2532Burned Calendar26%(139/518)Mar 22, 2026
2533Longest Ordered Subsequence44%(39493/88528)Apr 9, 2026
2534Falling cards18%(73/405)Dec 9, 2025
2535Very Simple Problem37%(1730/4642)Apr 3, 2026
2536Gopher II39%(4421/11142)Apr 3, 2026
2537Tight words46%(1347/2876)Mar 20, 2026
2538WERTYU45%(5182/11331)Nov 23, 2025
2539Division25%(667/2600)Mar 6, 2026
2540Hotter Colder38%(1635/4201)Mar 21, 2026
2541Binary Witch37%(633/1704)Jan 7, 2026
2542Fool Game19%(78/401)Mar 6, 2026
2543Spreadsheet23%(115/484)Dec 9, 2025
2544PreQueL14%(51/344)Mar 6, 2026
2545Hamming Problem46%(3174/6861)Apr 3, 2026
2546Circular Area34%(2868/8333)Apr 3, 2026
2547No Tipping36%(347/942)Dec 1, 2025
2548Subway38%(182/475)Apr 3, 2026
2549Sumsets27%(4331/15821)Apr 10, 2026
2550Zipf's Law30%(591/1937)Dec 9, 2025
2551Ones55%(7015/12558)Apr 3, 2026
2552Assistance Required58%(1741/2999)Apr 3, 2026
2553The Bottom of a Graph40%(5809/14332)Apr 1, 2026
2554Fixed Partition Contest Management30%(129/420)Dec 9, 2025
2555Drink, on Ice58%(889/1527)Nov 25, 2025
2556Edge67%(941/1400)Nov 25, 2025
2557Fold40%(162/397)Mar 25, 2026
2558Genetic Code53%(697/1292)Nov 20, 2025
2559Largest Rectangle in a Histogram32%(14658/45261)Apr 14, 2026
2560Freckles45%(4698/10393)Apr 3, 2026
2561Language Cardinality20%(267/1313)Apr 3, 2026
2562Primary Arithmetic36%(4479/12316)Apr 3, 2026
2563Demerit Points33%(178/536)Dec 9, 2025
2564Edit Step Ladders35%(1045/2903)Apr 3, 2026
2565Average is not Fast Enough!43%(1021/2366)Nov 20, 2025
2566Bound Found31%(5029/16144)Apr 11, 2026
2567Code the Tree38%(1198/3088)Dec 9, 2025
2568Decode the Tree39%(783/1995)Dec 31, 2025
2569Etaoin Shrdlu49%(706/1424)Dec 9, 2025
2570Fiber Network43%(1883/4364)Nov 21, 2025
2571Global Roaming49%(413/833)Apr 5, 2026
2572Hard to Believe, but True!57%(2167/3778)Apr 3, 2026
2573Bridge32%(2001/6156)Mar 2, 2026
2574Saskatchewan24%(222/895)Mar 22, 2026
2575Jolly Jumpers29%(5576/18598)Apr 3, 2026
2576Tug of War28%(3241/11267)Apr 3, 2026
2577Interpreter34%(781/2266)Apr 3, 2026
2578Keep on Truckin'75%(6649/8789)Apr 3, 2026
2579Blurred Vision70%(1670/2366)Apr 3, 2026
2580The Door/Key Problem27%(202/725)Mar 6, 2026
2581Exact Change Only34%(956/2761)Apr 3, 2026
2582Finding Nemo42%(250/586)Apr 5, 2026
2583Series Determination65%(4339/6610)Apr 3, 2026
2584T-Shirt Gumbo47%(1999/4199)Mar 20, 2026
2585Window Pains49%(1684/3421)Apr 10, 2026
2586Y2K Accounting Bug50%(11327/22594)Apr 3, 2026
2587Airline Hub32%(674/2050)Apr 3, 2026
2588Snakes31%(487/1554)Dec 9, 2025
2589Snap38%(253/664)Dec 9, 2025
2590Steps45%(3865/8474)Apr 3, 2026
2591Set Definition46%(4729/10135)Apr 3, 2026
2592Standard Point System24%(206/840)Dec 9, 2025
2593Max Sequence41%(8662/21000)Jan 17, 2026
2594Treasure Exploration40%(5110/12642)Apr 3, 2026
2595Min-Max22%(575/2577)Dec 1, 2025
2596Dice Stacking24%(391/1597)Dec 1, 2025
2597Line Segment Erase28%(444/1540)Mar 21, 2026
2598Match Throwing Game29%(328/1094)Dec 9, 2025
2599A funny game42%(1016/2412)Apr 3, 2026

Home Page   Go Back  To top


All Rights Reserved 2003-2013 Ying Fuchen,Xu Pengcheng,Xie Di
Any problem, Please Contact Administrator