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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 |
| 1479 | MBone | 25%(38/149) | May 21, 2025 |
| 1452 | Signal Box | 18%(28/150) | May 23, 2025 |
| 1499 | Supercomputer Selection, The Sequel | 26%(46/171) | Dec 10, 2024 |
| 1467 | Symbolic Derivation | 42%(74/176) | May 17, 2025 |
| 1427 | Get Them All | 31%(60/193) | Aug 11, 2021 |
| 1439 | Rhombs | 38%(79/203) | Sep 6, 2025 |
| 1483 | Going in Circles on Alpha Centauri | 22%(46/208) | Apr 27, 2024 |
| 1449 | Enigma | 39%(87/223) | Sep 1, 2025 |
| 1445 | Random number | 17%(42/236) | Jan 5, 2024 |
| 1447 | Ambiguous Dates | 26%(64/246) | Apr 4, 2023 |
| 1498 | Matching Meetings | 19%(53/275) | May 23, 2025 |
| 1497 | Molecules | 43%(122/281) | May 26, 2025 |
| 1425 | Enigmatic Travel | 49%(139/282) | Sep 11, 2025 |
| 1431 | Calendar of Maya | 35%(101/287) | May 19, 2025 |
| 1413 | GIGA Universe Cup | 22%(66/290) | Aug 12, 2024 |
| 1428 | Hermes' Colony | 12%(42/329) | May 9, 2025 |
| 1443 | DEL command | 23%(77/330) | Jul 29, 2024 |
| 1435 | Gates | 44%(149/333) | May 5, 2023 |
| 1490 | Cabinets | 19%(70/360) | Nov 6, 2024 |
| 1448 | Cube | 30%(120/388) | Apr 29, 2024 |
| 1424 | Diamonds | 22%(86/390) | Aug 26, 2021 |
| 1441 | Table | 19%(85/430) | May 4, 2025 |
| 1421 | Peter's Calculator | 20%(92/449) | Dec 19, 2024 |
| 1464 | Company | 10%(49/449) | Sep 5, 2025 |
| 1494 | Sunrise | 36%(170/467) | Nov 12, 2024 |
| 1440 | Varacious Steve | 48%(232/479) | Sep 5, 2025 |
| 1407 | e-Market | 31%(155/488) | May 13, 2025 |
| 1412 | Equals are Equals | 18%(92/506) | Sep 11, 2020 |
| 1433 | Exchanges | 48%(254/528) | Oct 18, 2024 |
| 1461 | Binary Polynomials | 36%(196/532) | Sep 5, 2025 |
| 1495 | LED Test | 33%(182/539) | Jul 31, 2024 |
| 1446 | Moscow Time | 22%(152/672) | Sep 2, 2025 |
| 1415 | Map of Ninja House | 29%(199/673) | Feb 22, 2024 |
| 1478 | Island of Logic | 33%(227/676) | May 21, 2025 |
| 1437 | Chat Rooms | 15%(105/688) | May 8, 2025 |
| 1457 | Lord of the Ring | 28%(203/701) | Aug 19, 2024 |
| 1492 | Up and Down Sequences | 56%(448/799) | Sep 5, 2025 |
| 1476 | Always On the Run | 51%(412/799) | May 21, 2025 |
| 1453 | Delta Encoding and Decoding | 28%(229/801) | Apr 5, 2023 |
| 1403 | Hotline | 21%(178/838) | Mar 16, 2025 |
| 1444 | Parallelepiped walk | 23%(214/905) | Sep 6, 2025 |
| 1462 | Random Walk | 20%(191/914) | May 31, 2022 |
| 1409 | 77377 | 36%(359/990) | May 12, 2025 |
| 1420 | Spreadsheet | 46%(475/1031) | May 25, 2025 |
| 1460 | Firefighters | 31%(361/1150) | Sep 3, 2025 |
| 1438 | One-way Traffic | 32%(391/1213) | Aug 29, 2025 |
| 1414 | Life Line | 67%(817/1217) | Mar 13, 2025 |
| 1429 | Alice and Bob | 24%(294/1220) | Jul 29, 2024 |
| 1489 | Egyptian Multiplication | 29%(387/1312) | Sep 2, 2025 |
| 1418 | Viva Confetti | 40%(555/1383) | May 6, 2025 |
| 1480 | Optimal Programs | 34%(546/1572) | May 21, 2025 |
| 1406 | Starship Hakodate-maru | 59%(977/1629) | Jul 31, 2025 |
| 1482 | It's not a Bug, It's a Feature! | 39%(663/1689) | May 21, 2025 |
| 1481 | The Die Is Cast | 37%(696/1859) | Jun 28, 2025 |
| 1432 | Decoding Morse Sequences | 39%(744/1881) | Oct 17, 2024 |
| 1487 | Single-Player Games | 26%(517/1928) | Sep 2, 2025 |
| 1400 | Complicated Expressions | 30%(618/2034) | Jul 30, 2025 |
| 1430 | Binary Stirling Numbers | 40%(903/2245) | May 19, 2025 |
| 1473 | There's Treasure Everywhere! | 43%(975/2261) | May 27, 2025 |
| 1471 | Triangles | 36%(844/2318) | May 21, 2025 |
| 1402 | The Game of Master-Mind | 4%(102/2535) | Apr 29, 2025 |
| 1408 | Fishnet | 58%(1733/2957) | Sep 2, 2025 |
| 1454 | Factorial Frequencies | 42%(1265/2966) | May 13, 2025 |
| 1472 | Instant Complexity | 32%(1022/3130) | May 21, 2025 |
| 1468 | Rectangles | 50%(1849/3629) | May 17, 2025 |
| 1485 | Fast Food | 38%(1528/3944) | May 21, 2025 |
| 1493 | Machined Surfaces | 59%(2567/4310) | Sep 13, 2025 |
| 1434 | Fill the Cisterns! | 32%(1482/4522) | Jul 28, 2024 |
| 1404 | I-Keyboard | 48%(2204/4561) | May 5, 2025 |
| 1484 | Blowing Fuses | 38%(1751/4594) | May 21, 2025 |
| 1491 | Pi | 54%(2877/5279) | Sep 2, 2025 |
| 1451 | T9 | 33%(1847/5460) | Sep 6, 2025 |
| 1474 | Video Surveillance | 42%(2508/5841) | Sep 26, 2025 |
| 1496 | Word Index | 54%(3255/5923) | May 30, 2025 |
| 1486 | Sorting Slides | 37%(2433/6488) | Aug 21, 2025 |
| 1436 | Horizontally Visible Segments | 35%(2460/6864) | Aug 2, 2025 |
| 1419 | Graph Coloring | 45%(3425/7496) | Sep 1, 2025 |
| 1455 | Crazy tea party | 67%(5355/7929) | Sep 8, 2025 |
| 1405 | Heritage | 37%(2996/8005) | May 20, 2025 |
| 1416 | Shredding Company | 52%(4617/8803) | Sep 13, 2025 |
| 1465 | Multiple | 21%(2064/9409) | Sep 22, 2025 |
| 1450 | Gridland | 47%(5008/10561) | Jun 25, 2025 |
| 1422 | Air Raid | 58%(6698/11392) | Sep 27, 2025 |
| 1475 | Pushing Boxes | 33%(3967/11751) | Oct 9, 2025 |
| 1417 | True Liars | 31%(3659/11766) | Aug 17, 2025 |
| 1488 | TEX Quotes | 50%(6744/13263) | May 29, 2025 |
| 1411 | Calling Extraterrestrial Intelligence Again | 35%(5018/14153) | Sep 2, 2025 |
| 1466 | Girls and Boys | 45%(7123/15721) | Jul 25, 2025 |
| 1463 | Strategic game | 42%(7001/16560) | Sep 20, 2025 |
| 1401 | Factorial | 59%(11247/18749) | Jul 30, 2025 |
| 1442 | Black Box | 39%(8765/22065) | Oct 8, 2025 |
| 1410 | Intersection | 24%(5604/22461) | Oct 8, 2025 |
| 1477 | Box of Bricks | 37%(10188/27433) | May 21, 2025 |
| 1470 | Closest Common Ancestors | 29%(8686/29000) | Oct 9, 2025 |
| 1423 | Big Number | 30%(9766/31909) | May 25, 2025 |
| 1469 | COURSES | 37%(12402/32888) | Aug 2, 2025 |
| 1456 | Supermarket | 42%(14100/33285) | Sep 10, 2025 |
| 1459 | Power Network | 50%(17655/34676) | Sep 22, 2025 |
| 1426 | Find The Multiple | 37%(31536/83073) | Sep 24, 2025 |
| 1458 | Common Subsequence | 42%(38288/89979) | Sep 26, 2025 |
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