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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%(39/153) | Aug 8, 2026 |
| 1452 | Signal Box | 19%(30/155) | Aug 8, 2026 |
| 1499 | Supercomputer Selection, The Sequel | 27%(48/175) | Aug 8, 2026 |
| 1467 | Symbolic Derivation | 41%(76/185) | Aug 8, 2026 |
| 1427 | Get Them All | 31%(62/200) | Aug 8, 2026 |
| 1439 | Rhombs | 38%(79/207) | Aug 8, 2026 |
| 1483 | Going in Circles on Alpha Centauri | 22%(48/212) | Aug 8, 2026 |
| 1449 | Enigma | 38%(88/228) | Sep 2, 2026 |
| 1445 | Random number | 18%(44/242) | Aug 8, 2026 |
| 1447 | Ambiguous Dates | 26%(66/251) | Aug 8, 2026 |
| 1498 | Matching Meetings | 19%(55/284) | Aug 8, 2026 |
| 1497 | Molecules | 43%(129/294) | Sep 2, 2026 |
| 1425 | Enigmatic Travel | 50%(150/295) | Aug 8, 2026 |
| 1413 | GIGA Universe Cup | 22%(68/296) | Aug 8, 2026 |
| 1431 | Calendar of Maya | 35%(107/299) | Jun 11, 2026 |
| 1428 | Hermes' Colony | 13%(44/338) | Aug 8, 2026 |
| 1443 | DEL command | 23%(80/339) | Aug 8, 2026 |
| 1435 | Gates | 42%(149/348) | Aug 8, 2026 |
| 1490 | Cabinets | 19%(71/370) | Aug 9, 2026 |
| 1448 | Cube | 31%(122/393) | Sep 2, 2026 |
| 1424 | Diamonds | 22%(88/395) | Aug 8, 2026 |
| 1441 | Table | 19%(86/433) | Aug 8, 2026 |
| 1421 | Peter's Calculator | 20%(95/458) | Aug 8, 2026 |
| 1494 | Sunrise | 36%(171/473) | Aug 8, 2026 |
| 1464 | Company | 10%(50/480) | Aug 9, 2026 |
| 1407 | e-Market | 32%(159/493) | Aug 8, 2026 |
| 1440 | Varacious Steve | 48%(240/499) | Sep 5, 2026 |
| 1412 | Equals are Equals | 18%(94/510) | Aug 8, 2026 |
| 1461 | Binary Polynomials | 37%(201/537) | Aug 8, 2026 |
| 1433 | Exchanges | 47%(256/538) | Aug 8, 2026 |
| 1495 | LED Test | 34%(186/543) | Aug 8, 2026 |
| 1415 | Map of Ninja House | 29%(202/679) | Aug 8, 2026 |
| 1446 | Moscow Time | 22%(156/682) | Sep 2, 2026 |
| 1478 | Island of Logic | 33%(230/684) | Sep 5, 2026 |
| 1437 | Chat Rooms | 15%(112/704) | Aug 8, 2026 |
| 1457 | Lord of the Ring | 28%(206/712) | Aug 8, 2026 |
| 1492 | Up and Down Sequences | 55%(450/804) | Aug 13, 2026 |
| 1453 | Delta Encoding and Decoding | 28%(231/806) | Sep 5, 2026 |
| 1476 | Always On the Run | 51%(420/813) | Aug 15, 2026 |
| 1403 | Hotline | 21%(179/840) | Aug 8, 2026 |
| 1444 | Parallelepiped walk | 23%(216/908) | Sep 2, 2026 |
| 1462 | Random Walk | 20%(193/923) | Aug 8, 2026 |
| 1409 | 77377 | 36%(367/1006) | Aug 26, 2026 |
| 1420 | Spreadsheet | 46%(484/1045) | Aug 28, 2026 |
| 1460 | Firefighters | 31%(364/1159) | Sep 5, 2026 |
| 1438 | One-way Traffic | 31%(392/1231) | Aug 8, 2026 |
| 1429 | Alice and Bob | 24%(301/1238) | Sep 5, 2026 |
| 1414 | Life Line | 66%(828/1252) | Aug 15, 2026 |
| 1489 | Egyptian Multiplication | 29%(392/1327) | Sep 5, 2026 |
| 1418 | Viva Confetti | 40%(559/1394) | Aug 28, 2026 |
| 1480 | Optimal Programs | 34%(548/1577) | Aug 27, 2026 |
| 1406 | Starship Hakodate-maru | 59%(984/1642) | Aug 8, 2026 |
| 1482 | It's not a Bug, It's a Feature! | 39%(667/1694) | Aug 15, 2026 |
| 1481 | The Die Is Cast | 37%(699/1864) | Aug 15, 2026 |
| 1432 | Decoding Morse Sequences | 39%(748/1887) | Aug 9, 2026 |
| 1487 | Single-Player Games | 26%(521/1937) | Aug 29, 2026 |
| 1400 | Complicated Expressions | 30%(620/2037) | Aug 13, 2026 |
| 1473 | There's Treasure Everywhere! | 43%(979/2266) | Aug 20, 2026 |
| 1430 | Binary Stirling Numbers | 40%(926/2274) | Aug 8, 2026 |
| 1471 | Triangles | 36%(847/2324) | Aug 8, 2026 |
| 1402 | The Game of Master-Mind | 4%(115/2584) | Aug 8, 2026 |
| 1408 | Fishnet | 58%(1739/2964) | Aug 8, 2026 |
| 1454 | Factorial Frequencies | 42%(1268/2979) | Aug 8, 2026 |
| 1472 | Instant Complexity | 32%(1025/3151) | Aug 8, 2026 |
| 1468 | Rectangles | 51%(1868/3650) | Aug 8, 2026 |
| 1485 | Fast Food | 38%(1531/3969) | Aug 9, 2026 |
| 1493 | Machined Surfaces | 59%(2577/4323) | Aug 8, 2026 |
| 1434 | Fill the Cisterns! | 32%(1486/4533) | Aug 8, 2026 |
| 1404 | I-Keyboard | 48%(2207/4571) | Aug 8, 2026 |
| 1484 | Blowing Fuses | 38%(1763/4609) | Aug 8, 2026 |
| 1491 | Pi | 54%(2894/5297) | Aug 20, 2026 |
| 1451 | T9 | 33%(1849/5464) | Aug 8, 2026 |
| 1474 | Video Surveillance | 42%(2517/5862) | Aug 8, 2026 |
| 1496 | Word Index | 55%(3269/5939) | Aug 8, 2026 |
| 1486 | Sorting Slides | 37%(2478/6594) | Aug 8, 2026 |
| 1436 | Horizontally Visible Segments | 35%(2467/6882) | Aug 8, 2026 |
| 1419 | Graph Coloring | 45%(3441/7546) | Sep 5, 2026 |
| 1455 | Crazy tea party | 67%(5367/7950) | Aug 8, 2026 |
| 1405 | Heritage | 37%(3004/8018) | Aug 8, 2026 |
| 1416 | Shredding Company | 52%(4633/8829) | Aug 14, 2026 |
| 1465 | Multiple | 22%(2077/9429) | Aug 8, 2026 |
| 1450 | Gridland | 47%(5016/10579) | Aug 8, 2026 |
| 1422 | Air Raid | 59%(6794/11507) | Aug 8, 2026 |
| 1475 | Pushing Boxes | 33%(3986/11791) | Aug 8, 2026 |
| 1417 | True Liars | 31%(3674/11803) | Aug 17, 2026 |
| 1488 | TEX Quotes | 50%(6762/13286) | Aug 8, 2026 |
| 1411 | Calling Extraterrestrial Intelligence Again | 35%(5028/14169) | Aug 8, 2026 |
| 1466 | Girls and Boys | 44%(7220/16061) | Aug 8, 2026 |
| 1463 | Strategic game | 42%(7078/16737) | Sep 4, 2026 |
| 1401 | Factorial | 60%(11291/18808) | Aug 8, 2026 |
| 1442 | Black Box | 39%(8807/22153) | Aug 29, 2026 |
| 1410 | Intersection | 24%(5626/22517) | Aug 8, 2026 |
| 1477 | Box of Bricks | 37%(10238/27577) | Aug 8, 2026 |
| 1470 | Closest Common Ancestors | 29%(8695/29074) | Aug 8, 2026 |
| 1423 | Big Number | 30%(9782/31962) | Aug 8, 2026 |
| 1469 | COURSES | 38%(12640/33204) | Aug 8, 2026 |
| 1456 | Supermarket | 42%(14191/33561) | Sep 6, 2026 |
| 1459 | Power Network | 50%(17748/34972) | Aug 29, 2026 |
| 1426 | Find The Multiple | 37%(31676/83525) | Sep 1, 2026 |
| 1458 | Common Subsequence | 42%(39114/91250) | Sep 4, 2026 |
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