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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 |
| 3500 | Youth Hostel Dorm | 25%(116/452) | Nov 25, 2025 |
| 3501 | Escape from Enemy Territory | 26%(850/3206) | Nov 25, 2025 |
| 3502 | Flight Safety | 20%(174/855) | Oct 20, 2025 |
| 3503 | Summits | 35%(482/1362) | Oct 19, 2025 |
| 3504 | Obfuscation | 19%(603/3136) | Nov 25, 2025 |
| 3505 | Tower Parking | 61%(1231/2012) | Nov 25, 2025 |
| 3506 | Walk | 29%(157/533) | Oct 19, 2025 |
| 3507 | Judging Olympia | 47%(4320/9170) | Nov 20, 2025 |
| 3508 | Hide That Number | 27%(2002/7166) | Nov 25, 2025 |
| 3509 | Rotating Rings | 38%(812/2113) | Nov 12, 2025 |
| 3510 | A Tale from the Dark Side of the Moon | 27%(943/3399) | Oct 19, 2025 |
| 3511 | Fermat's Christmas Theorem | 21%(1903/8970) | Nov 25, 2025 |
| 3512 | Incidental Points | 22%(1194/5323) | Nov 25, 2025 |
| 3513 | Let's Go to the Movies | 20%(597/2850) | Nov 17, 2025 |
| 3514 | The Writers' Club | 21%(189/900) | Oct 16, 2025 |
| 3515 | Moving Sticks | 29%(82/279) | Oct 19, 2025 |
| 3516 | Johnny Hates Math | 11%(444/3701) | Oct 23, 2025 |
| 3517 | And Then There Was One | 55%(3539/6390) | Nov 25, 2025 |
| 3518 | Prime Gap | 56%(7048/12555) | Nov 25, 2025 |
| 3519 | Minimal Backgammon | 57%(771/1349) | Oct 19, 2025 |
| 3520 | Lowest Pyramid | 23%(87/376) | Sep 14, 2025 |
| 3521 | Geometric Map | 39%(159/402) | Oct 21, 2025 |
| 3522 | Slim Span | 52%(6162/11709) | Nov 25, 2025 |
| 3523 | The Morning after Halloween | 22%(807/3517) | Nov 25, 2025 |
| 3524 | Bug Hunt | 46%(402/861) | Nov 12, 2025 |
| 3525 | Most Distant Point from the Sea | 42%(3314/7708) | Oct 28, 2025 |
| 3526 | The Teacher’s Side of Math | 29%(250/847) | Oct 18, 2025 |
| 3527 | Generalized Connect Four | 17%(121/688) | Oct 21, 2025 |
| 3528 | Ultimate Weapon | 47%(1275/2687) | Nov 11, 2025 |
| 3529 | Matrix Analysis | 22%(39/170) | Nov 25, 2025 |
| 3530 | A Modular Arithmetic Challenge | 16%(340/2095) | Nov 13, 2025 |
| 3531 | Alternating Sum of Digits | 17%(46/260) | Nov 20, 2025 |
| 3532 | Resistance | 33%(519/1553) | Nov 20, 2025 |
| 3533 | Light Switching Game | 59%(401/669) | Sep 24, 2025 |
| 3534 | Escape of Life and Death | 12%(327/2605) | Oct 18, 2025 |
| 3535 | A+B | 40%(405/990) | Nov 25, 2025 |
| 3536 | Beer Refrigerator | 39%(2325/5903) | Nov 25, 2025 |
| 3537 | Crosses and Crosses | 37%(2183/5790) | Nov 25, 2025 |
| 3538 | Domestic Networks | 25%(291/1151) | Oct 19, 2025 |
| 3539 | Elevator | 27%(517/1856) | Nov 25, 2025 |
| 3540 | Formula | 16%(22/132) | Oct 13, 2023 |
| 3541 | Given a string… | 21%(421/1953) | Nov 25, 2025 |
| 3542 | History of Football | 23%(280/1197) | Nov 25, 2025 |
| 3543 | iChess | 44%(1186/2670) | Nov 20, 2025 |
| 3544 | Journey with Pigs | 31%(1125/3564) | Nov 20, 2025 |
| 3545 | K’ak’-u-pakal and Mayan Script | 15%(28/182) | Oct 20, 2025 |
| 3546 | Sea battle | 34%(482/1385) | Nov 25, 2025 |
| 3547 | Cube evolvent | 26%(104/396) | Oct 20, 2025 |
| 3548 | Restoring the digits | 31%(195/624) | Nov 20, 2025 |
| 3549 | GSM phone | 12%(53/419) | Oct 21, 2025 |
| 3550 | AT – sequence | 33%(287/857) | Nov 25, 2025 |
| 3551 | Putin-chess | 19%(28/147) | Oct 19, 2025 |
| 3552 | Snatch! | 23%(69/291) | Oct 18, 2025 |
| 3553 | Task schedule | 58%(471/804) | Nov 25, 2025 |
| 3554 | Almost the shortest route | 25%(352/1377) | Nov 25, 2025 |
| 3555 | Cocktail | 21%(110/506) | Nov 12, 2025 |
| 3556 | Increasing subsequences | 24%(74/302) | Nov 25, 2025 |
| 3557 | Map Generator | 26%(475/1767) | Nov 20, 2025 |
| 3558 | Map Generator returns (MG-II) | 44%(142/317) | Nov 25, 2025 |
| 3559 | Trigonometric optimization | 10%(55/522) | Sep 1, 2025 |
| 3560 | Supersquare | 17%(38/212) | Oct 18, 2025 |
| 3561 | Pseudographical recognizer | 40%(997/2449) | Nov 20, 2025 |
| 3562 | “Roman” corridor | 34%(189/552) | Nov 25, 2025 |
| 3563 | Parabolic teleports | 6%(13/209) | Oct 18, 2025 |
| 3564 | Magic pyramid | 15%(30/196) | Oct 17, 2025 |
| 3565 | Ants | 32%(3146/9709) | Nov 25, 2025 |
| 3566 | Building for UN | 44%(912/2056) | Nov 20, 2025 |
| 3567 | Cactus Reloaded | 32%(423/1317) | Nov 25, 2025 |
| 3568 | Diver | 49%(81/164) | Oct 20, 2025 |
| 3569 | Equation | 18%(130/693) | Nov 25, 2025 |
| 3570 | Fund Management | 20%(160/776) | Oct 21, 2025 |
| 3571 | Game | 27%(116/427) | Dec 22, 2022 |
| 3572 | Hanoi Towers | 49%(379/767) | Oct 21, 2025 |
| 3573 | I18n | 24%(366/1496) | Oct 21, 2025 |
| 3574 | Japanese Writing | 48%(120/249) | Oct 20, 2025 |
| 3575 | Kingdom Partitioning | 14%(40/278) | Oct 19, 2025 |
| 3576 | Language Recognition | 26%(540/2017) | Oct 22, 2025 |
| 3577 | Global Positioning System | 8%(106/1298) | Nov 17, 2025 |
| 3578 | Card Game | 11%(83/714) | Oct 15, 2025 |
| 3579 | Median | 32%(8872/26934) | Nov 25, 2025 |
| 3580 | SuperMemo | 29%(7338/24650) | Nov 22, 2025 |
| 3581 | Sequence | 22%(2405/10567) | Nov 25, 2025 |
| 3582 | Last Hit | 1%(8/640) | Oct 19, 2025 |
| 3583 | Text Message Formatting | 13%(140/1020) | Oct 17, 2025 |
| 3584 | Small Polynomial Factorization | 19%(64/330) | Oct 20, 2025 |
| 3585 | Accumulation Degree | 21%(2844/13466) | Nov 25, 2025 |
| 3586 | The missionaries and cannibals | 9%(90/929) | Nov 17, 2025 |
| 3587 | The Biggest Cake | 17%(625/3501) | Nov 25, 2025 |
| 3588 | The Downloading Task | 25%(372/1438) | Oct 18, 2025 |
| 3589 | Number-guessing Game | 71%(5438/7638) | Nov 20, 2025 |
| 3590 | The shuffle Problem | 33%(872/2635) | Oct 20, 2025 |
| 3591 | Ants and Aphides | 8%(30/368) | Oct 20, 2025 |
| 3592 | Instantaneous Transference | 22%(1816/8087) | Nov 25, 2025 |
| 3593 | Sea Base Exploration | 27%(455/1639) | Nov 25, 2025 |
| 3594 | Escort of Dr. Who How | 27%(789/2908) | Oct 20, 2025 |
| 3595 | Full Steiner Topologies | 35%(266/756) | Oct 20, 2025 |
| 3596 | Illuminated Planet | 28%(102/352) | Nov 25, 2025 |
| 3597 | Polygon Division | 53%(762/1436) | Oct 19, 2025 |
| 3598 | PopKart | 22%(245/1087) | Nov 25, 2025 |
| 3599 | Pumping Lemma | 35%(116/324) | Oct 18, 2025 |
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