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| Online Judge | Problem Set | Authors | Online Contests | User | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Web Board Home Page F.A.Qs Statistical Charts | Current Contest Past Contests Scheduled Contests Award Contest | |||||||||
| ID | Title | Ratio(AC/submit) | Date |
| 1567 | WIMP | 36%(46/126) | Jan 8, 2026 |
| 1560 | 18 Wheeler Caravans (aka Semigroups) | 34%(49/141) | Dec 1, 2025 |
| 1594 | Message Routing | 37%(55/145) | Dec 1, 2025 |
| 1516 | Parallel Deadlock | 32%(48/147) | Dec 9, 2025 |
| 1596 | Gears on a Board | 24%(43/174) | Dec 9, 2025 |
| 1587 | High and Dry | 16%(32/192) | Jan 8, 2026 |
| 1510 | Hares and Foxes | 26%(56/211) | Jan 8, 2026 |
| 1512 | Keeps Going and Going and ... | 27%(61/218) | Jan 7, 2026 |
| 1534 | Terrorist Attack | 18%(41/225) | Jan 8, 2026 |
| 1500 | Polygonal Puzzle | 16%(37/227) | Dec 9, 2025 |
| 1527 | Making the Grade | 54%(133/243) | Jan 7, 2026 |
| 1554 | Tournament Brackets | 37%(94/253) | Dec 1, 2025 |
| 1553 | Fax Regions | 22%(59/262) | Dec 1, 2025 |
| 1525 | Hi-Q | 58%(156/267) | Jan 8, 2026 |
| 1541 | Dart-a-Mania | 31%(84/270) | Nov 20, 2025 |
| 1593 | Radar Scopes | 19%(55/280) | Dec 9, 2025 |
| 1540 | The Finite State Text-Processing | 11%(33/281) | Dec 9, 2025 |
| 1557 | Mapmaker | 58%(166/283) | Jan 7, 2026 |
| 1536 | Trains | 14%(40/284) | Dec 9, 2025 |
| 1538 | Extrapolation Using a Difference Table | 54%(175/323) | Dec 9, 2025 |
| 1558 | Board Silly | 50%(173/346) | Jan 8, 2026 |
| 1550 | Treadmill | 50%(179/353) | Jan 8, 2026 |
| 1559 | Equation Elation | 41%(150/359) | Jan 8, 2026 |
| 1571 | Loansome Car Buyer | 40%(149/367) | Jan 8, 2026 |
| 1592 | Postscript | 23%(90/376) | Dec 9, 2025 |
| 1524 | Cowculations | 51%(203/393) | Dec 9, 2025 |
| 1542 | DNA Translation | 18%(76/414) | Dec 9, 2025 |
| 1544 | A Puzzling Problem | 32%(143/435) | Nov 20, 2025 |
| 1570 | Exchange Rates | 46%(202/439) | Jan 7, 2026 |
| 1518 | Problem Bee | 44%(205/462) | Oct 14, 2025 |
| 1526 | Call Forwarding | 32%(149/463) | Dec 9, 2025 |
| 1585 | Helping Florida | 21%(105/482) | Jan 9, 2026 |
| 1551 | Data Mining? | 36%(176/483) | Dec 9, 2025 |
| 1545 | Galactic Import | 40%(199/495) | Jan 8, 2026 |
| 1507 | Commedia dell' arte | 38%(189/496) | Jan 8, 2026 |
| 1530 | Slurpys | 50%(250/498) | Jan 8, 2026 |
| 1533 | Mystery | 12%(66/533) | Jan 7, 2026 |
| 1582 | Which Way Do I Go? | 13%(77/551) | Jan 8, 2026 |
| 1576 | Colorville | 39%(216/553) | Dec 18, 2025 |
| 1529 | Shipping Routes | 47%(305/640) | Jan 8, 2026 |
| 1599 | Station Balance | 35%(234/666) | Dec 9, 2025 |
| 1522 | N-Credible Mazes | 50%(340/668) | Nov 20, 2025 |
| 1561 | Another Puzzling Problem | 21%(148/678) | Jan 8, 2026 |
| 1574 | The Triangle Game | 51%(368/718) | Dec 9, 2025 |
| 1514 | Metal Cutting | 33%(250/748) | Dec 9, 2025 |
| 1539 | Evaluating Simple C Expressions | 42%(320/749) | Dec 9, 2025 |
| 1588 | Reverse Roman Notation | 38%(295/775) | Jan 8, 2026 |
| 1549 | Bright Bracelet | 24%(195/812) | Dec 9, 2025 |
| 1537 | Identifying Legal Pascal Real Constants | 34%(280/816) | Nov 20, 2025 |
| 1578 | Instruens Fabulam | 45%(373/825) | Dec 9, 2025 |
| 1535 | Forgetful | 20%(185/895) | Jan 8, 2026 |
| 1531 | Trooper of Bam | 0%(5/905) | Dec 1, 2025 |
| 1566 | Haiku Review | 60%(558/920) | Jan 8, 2026 |
| 1532 | Mixed Numbers | 14%(135/927) | Dec 9, 2025 |
| 1508 | Skyscraper Floors | 17%(188/1060) | Jan 8, 2026 |
| 1506 | Substitution Cipher | 15%(212/1333) | Jan 7, 2026 |
| 1513 | Scheduling Lectures | 42%(586/1373) | Dec 9, 2025 |
| 1569 | Myacm Triangles | 53%(782/1452) | Nov 20, 2025 |
| 1591 | M*A*S*H | 49%(726/1464) | Jan 8, 2026 |
| 1572 | Automatic Editing | 44%(732/1631) | Nov 20, 2025 |
| 1501 | Word-Search Wonder | 38%(671/1726) | Jan 7, 2026 |
| 1515 | Street Directions | 47%(872/1848) | Dec 9, 2025 |
| 1583 | Choose Your Words Carefully | 30%(596/1963) | Jan 7, 2026 |
| 1568 | Find the Winning Move | 46%(995/2139) | Jan 8, 2026 |
| 1563 | The Snail | 42%(1112/2621) | Nov 20, 2025 |
| 1520 | Scramble Sort | 45%(1370/2980) | Dec 9, 2025 |
| 1589 | Unix ls | 33%(1072/3240) | Jan 8, 2026 |
| 1586 | Three Sides Make a Triangle | 15%(679/4255) | Jan 8, 2026 |
| 1590 | Palindromes | 33%(1595/4806) | Jan 9, 2026 |
| 1598 | Excuses, Excuses! | 33%(1684/4986) | Nov 21, 2025 |
| 1548 | Robots | 46%(2331/5064) | Dec 25, 2025 |
| 1546 | Basically Speaking | 43%(2327/5313) | Nov 21, 2025 |
| 1580 | String Matching | 47%(2669/5650) | Nov 20, 2025 |
| 1575 | Easier Done Than Said? | 52%(3052/5806) | Jan 7, 2026 |
| 1581 | A Contesting Decision | 56%(3457/6072) | Jan 8, 2026 |
| 1509 | Glass Beads | 54%(3750/6907) | Jan 8, 2026 |
| 1555 | Polynomial Showdown | 32%(2336/7235) | Jan 8, 2026 |
| 1597 | Uniform Generator | 42%(3121/7321) | Jan 4, 2026 |
| 1577 | Falling Leaves | 52%(4152/7981) | Jan 7, 2026 |
| 1584 | A Round Peg in a Ground Hole | 31%(3044/9777) | Jan 9, 2026 |
| 1547 | Clay Bully | 54%(5507/10034) | Jan 7, 2026 |
| 1564 | Sum It Up | 50%(5352/10674) | Jan 8, 2026 |
| 1565 | Skew Binary | 63%(7390/11634) | Jan 9, 2026 |
| 1595 | Prime Cuts | 37%(4916/13066) | Nov 20, 2025 |
| 1505 | Copying Books | 30%(4310/14133) | Jan 8, 2026 |
| 1556 | The Doors | 35%(5012/14240) | Dec 9, 2025 |
| 1523 | SPF | 42%(6103/14262) | Dec 30, 2025 |
| 1528 | Perfection | 45%(6511/14375) | Jan 8, 2026 |
| 1573 | Robot Motion | 46%(8641/18621) | Nov 20, 2025 |
| 1543 | Perfect Cubes | 47%(9573/20328) | Jan 7, 2026 |
| 1517 | u Calculate e | 57%(12143/21003) | Dec 9, 2025 |
| 1502 | MPI Maelstrom | 57%(12424/21632) | Jan 9, 2026 |
| 1504 | Adding Reversed Numbers | 52%(11770/22398) | Jan 7, 2026 |
| 1521 | Entropy | 31%(7251/23258) | Jan 11, 2026 |
| 1552 | Doubles | 55%(15099/27277) | Dec 3, 2025 |
| 1579 | Function Run Fun | 45%(13340/29035) | Nov 20, 2025 |
| 1562 | Oil Deposits | 50%(15339/30495) | Jan 11, 2026 |
| 1519 | Digital Roots | 32%(10071/31127) | Jan 7, 2026 |
| 1503 | Integer Inquiry | 38%(15574/40612) | Nov 20, 2025 |
| 1511 | Invitation Cards | 30%(14956/48483) | Dec 17, 2025 |
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