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| Online Judge | Problem Set | Authors | Online Contests | User | ||||||
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| 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 | 37%(46/122) | May 5, 2025 |
| 1560 | 18 Wheeler Caravans (aka Semigroups) | 35%(49/137) | Sep 2, 2025 |
| 1594 | Message Routing | 38%(55/142) | Sep 1, 2025 |
| 1516 | Parallel Deadlock | 33%(48/145) | Sep 28, 2025 |
| 1596 | Gears on a Board | 24%(42/172) | Dec 10, 2024 |
| 1587 | High and Dry | 16%(32/189) | Jun 19, 2025 |
| 1512 | Keeps Going and Going and ... | 28%(58/206) | May 12, 2025 |
| 1510 | Hares and Foxes | 26%(56/208) | Jul 23, 2024 |
| 1534 | Terrorist Attack | 18%(41/221) | May 21, 2025 |
| 1500 | Polygonal Puzzle | 16%(37/225) | Nov 12, 2020 |
| 1527 | Making the Grade | 55%(132/239) | Sep 2, 2025 |
| 1554 | Tournament Brackets | 37%(94/251) | May 18, 2025 |
| 1553 | Fax Regions | 22%(59/260) | May 18, 2025 |
| 1525 | Hi-Q | 58%(154/263) | Sep 1, 2025 |
| 1541 | Dart-a-Mania | 30%(81/267) | May 18, 2025 |
| 1593 | Radar Scopes | 19%(55/276) | Sep 2, 2025 |
| 1540 | The Finite State Text-Processing | 11%(33/278) | May 14, 2025 |
| 1557 | Mapmaker | 58%(164/279) | May 18, 2025 |
| 1536 | Trains | 14%(40/282) | Jan 8, 2024 |
| 1538 | Extrapolation Using a Difference Table | 54%(175/319) | Sep 6, 2025 |
| 1558 | Board Silly | 50%(172/342) | May 18, 2025 |
| 1550 | Treadmill | 50%(176/350) | Sep 5, 2025 |
| 1559 | Equation Elation | 42%(150/354) | May 18, 2025 |
| 1571 | Loansome Car Buyer | 40%(146/363) | May 30, 2025 |
| 1592 | Postscript | 24%(90/374) | Sep 2, 2025 |
| 1524 | Cowculations | 51%(201/390) | May 19, 2025 |
| 1542 | DNA Translation | 18%(76/411) | May 18, 2025 |
| 1544 | A Puzzling Problem | 32%(141/433) | May 18, 2025 |
| 1570 | Exchange Rates | 46%(200/434) | May 30, 2025 |
| 1526 | Call Forwarding | 32%(148/460) | May 19, 2025 |
| 1518 | Problem Bee | 44%(205/461) | May 19, 2025 |
| 1585 | Helping Florida | 21%(103/478) | Jun 3, 2025 |
| 1551 | Data Mining? | 36%(175/480) | Sep 5, 2025 |
| 1545 | Galactic Import | 40%(197/492) | May 18, 2025 |
| 1507 | Commedia dell' arte | 38%(187/492) | Sep 1, 2025 |
| 1530 | Slurpys | 49%(245/493) | Sep 6, 2025 |
| 1533 | Mystery | 12%(66/530) | Sep 1, 2025 |
| 1576 | Colorville | 39%(215/547) | May 30, 2025 |
| 1582 | Which Way Do I Go? | 13%(76/548) | Aug 1, 2025 |
| 1529 | Shipping Routes | 48%(305/634) | Sep 2, 2025 |
| 1599 | Station Balance | 35%(234/663) | Nov 15, 2024 |
| 1561 | Another Puzzling Problem | 21%(143/666) | May 27, 2025 |
| 1522 | N-Credible Mazes | 50%(339/666) | May 21, 2025 |
| 1574 | The Triangle Game | 51%(366/714) | May 29, 2025 |
| 1539 | Evaluating Simple C Expressions | 42%(320/745) | Sep 30, 2024 |
| 1514 | Metal Cutting | 33%(250/747) | Nov 13, 2024 |
| 1588 | Reverse Roman Notation | 38%(295/771) | May 28, 2025 |
| 1549 | Bright Bracelet | 23%(194/809) | May 18, 2025 |
| 1537 | Identifying Legal Pascal Real Constants | 34%(279/815) | May 21, 2025 |
| 1578 | Instruens Fabulam | 45%(372/821) | May 30, 2025 |
| 1531 | Trooper of Bam | 0%(5/891) | May 13, 2025 |
| 1535 | Forgetful | 20%(185/891) | Jul 16, 2024 |
| 1566 | Haiku Review | 60%(556/917) | Aug 1, 2025 |
| 1532 | Mixed Numbers | 14%(135/924) | Sep 19, 2024 |
| 1508 | Skyscraper Floors | 17%(188/1056) | May 24, 2025 |
| 1506 | Substitution Cipher | 15%(212/1329) | May 26, 2025 |
| 1513 | Scheduling Lectures | 42%(586/1369) | Sep 27, 2024 |
| 1569 | Myacm Triangles | 53%(780/1450) | May 29, 2025 |
| 1591 | M*A*S*H | 49%(726/1459) | Aug 3, 2025 |
| 1572 | Automatic Editing | 44%(730/1629) | May 30, 2025 |
| 1501 | Word-Search Wonder | 38%(669/1722) | Sep 6, 2025 |
| 1515 | Street Directions | 47%(872/1845) | Sep 11, 2025 |
| 1583 | Choose Your Words Carefully | 30%(594/1959) | Sep 8, 2025 |
| 1568 | Find the Winning Move | 46%(994/2134) | May 29, 2025 |
| 1563 | The Snail | 42%(1110/2619) | May 18, 2025 |
| 1520 | Scramble Sort | 46%(1369/2976) | Sep 1, 2025 |
| 1589 | Unix ls | 33%(1070/3234) | May 28, 2025 |
| 1586 | Three Sides Make a Triangle | 15%(679/4248) | Sep 2, 2025 |
| 1590 | Palindromes | 33%(1593/4800) | Jun 4, 2025 |
| 1598 | Excuses, Excuses! | 33%(1679/4973) | May 12, 2025 |
| 1548 | Robots | 45%(2325/5055) | Sep 22, 2025 |
| 1546 | Basically Speaking | 43%(2325/5311) | May 18, 2025 |
| 1580 | String Matching | 47%(2666/5646) | Jun 27, 2025 |
| 1575 | Easier Done Than Said? | 52%(3050/5802) | Jun 22, 2025 |
| 1581 | A Contesting Decision | 56%(3452/6067) | Sep 26, 2025 |
| 1509 | Glass Beads | 54%(3747/6904) | Sep 15, 2025 |
| 1555 | Polynomial Showdown | 32%(2333/7229) | Aug 3, 2025 |
| 1597 | Uniform Generator | 42%(3103/7263) | Sep 29, 2025 |
| 1577 | Falling Leaves | 52%(4146/7973) | Sep 24, 2025 |
| 1584 | A Round Peg in a Ground Hole | 31%(3040/9766) | Oct 9, 2025 |
| 1547 | Clay Bully | 54%(5504/10027) | Aug 3, 2025 |
| 1564 | Sum It Up | 50%(5349/10669) | Aug 3, 2025 |
| 1565 | Skew Binary | 63%(7387/11630) | May 18, 2025 |
| 1595 | Prime Cuts | 37%(4914/13063) | Aug 3, 2025 |
| 1505 | Copying Books | 30%(4304/14125) | Sep 25, 2025 |
| 1556 | The Doors | 35%(5010/14236) | Oct 8, 2025 |
| 1523 | SPF | 42%(6099/14251) | Sep 10, 2025 |
| 1528 | Perfection | 45%(6504/14358) | Sep 26, 2025 |
| 1573 | Robot Motion | 46%(8639/18618) | May 30, 2025 |
| 1543 | Perfect Cubes | 47%(9566/20313) | May 18, 2025 |
| 1517 | u Calculate e | 57%(12138/20997) | Sep 2, 2025 |
| 1502 | MPI Maelstrom | 58%(12284/21160) | Sep 8, 2025 |
| 1521 | Entropy | 32%(7074/21981) | Sep 26, 2025 |
| 1504 | Adding Reversed Numbers | 52%(11762/22377) | Sep 27, 2025 |
| 1552 | Doubles | 55%(15090/27255) | Sep 27, 2025 |
| 1579 | Function Run Fun | 45%(13337/29032) | Sep 4, 2025 |
| 1562 | Oil Deposits | 50%(15335/30445) | Sep 7, 2025 |
| 1519 | Digital Roots | 32%(10063/31064) | Sep 24, 2025 |
| 1503 | Integer Inquiry | 38%(15571/40608) | Jul 31, 2025 |
| 1511 | Invitation Cards | 30%(14948/48402) | Sep 12, 2025 |
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