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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%(119/460) | Oct 19, 2026 |
| 3501 | Escape from Enemy Territory | 26%(853/3210) | Oct 14, 2026 |
| 3502 | Flight Safety | 20%(177/860) | Oct 19, 2026 |
| 3503 | Summits | 35%(485/1373) | Oct 14, 2026 |
| 3504 | Obfuscation | 19%(606/3147) | Oct 14, 2026 |
| 3505 | Tower Parking | 61%(1242/2027) | Oct 14, 2026 |
| 3506 | Walk | 29%(159/536) | Oct 16, 2026 |
| 3507 | Judging Olympia | 47%(4330/9185) | Oct 14, 2026 |
| 3508 | Hide That Number | 28%(2014/7183) | Oct 14, 2026 |
| 3509 | Rotating Rings | 38%(819/2128) | Oct 14, 2026 |
| 3510 | A Tale from the Dark Side of the Moon | 27%(947/3426) | Oct 14, 2026 |
| 3511 | Fermat's Christmas Theorem | 21%(1907/8988) | Oct 14, 2026 |
| 3512 | Incidental Points | 22%(1199/5330) | Oct 14, 2026 |
| 3513 | Let's Go to the Movies | 20%(599/2854) | Oct 14, 2026 |
| 3514 | The Writers' Club | 20%(191/911) | Oct 16, 2026 |
| 3515 | Moving Sticks | 28%(85/295) | Oct 21, 2026 |
| 3516 | Johnny Hates Math | 12%(448/3716) | Oct 19, 2026 |
| 3517 | And Then There Was One | 54%(3626/6607) | Oct 14, 2026 |
| 3518 | Prime Gap | 56%(7074/12588) | Oct 14, 2026 |
| 3519 | Minimal Backgammon | 57%(775/1357) | Oct 14, 2026 |
| 3520 | Lowest Pyramid | 23%(89/379) | Oct 19, 2026 |
| 3521 | Geometric Map | 39%(161/405) | Oct 16, 2026 |
| 3522 | Slim Span | 52%(6177/11729) | Oct 14, 2026 |
| 3523 | The Morning after Halloween | 22%(810/3528) | Oct 14, 2026 |
| 3524 | Bug Hunt | 46%(405/866) | Oct 14, 2026 |
| 3525 | Most Distant Point from the Sea | 43%(3326/7726) | Oct 14, 2026 |
| 3526 | The Teacher’s Side of Math | 29%(252/851) | Oct 14, 2026 |
| 3527 | Generalized Connect Four | 17%(123/698) | Oct 21, 2026 |
| 3528 | Ultimate Weapon | 47%(1280/2699) | Oct 14, 2026 |
| 3529 | Matrix Analysis | 24%(42/175) | Oct 16, 2026 |
| 3530 | A Modular Arithmetic Challenge | 16%(343/2116) | Oct 14, 2026 |
| 3531 | Alternating Sum of Digits | 17%(48/268) | Oct 16, 2026 |
| 3532 | Resistance | 33%(525/1568) | Oct 14, 2026 |
| 3533 | Light Switching Game | 59%(405/676) | Oct 14, 2026 |
| 3534 | Escape of Life and Death | 12%(335/2621) | Oct 14, 2026 |
| 3535 | A+B | 40%(408/1000) | Oct 14, 2026 |
| 3536 | Beer Refrigerator | 39%(2332/5915) | Oct 14, 2026 |
| 3537 | Crosses and Crosses | 37%(2191/5809) | Oct 14, 2026 |
| 3538 | Domestic Networks | 25%(295/1164) | Oct 19, 2026 |
| 3539 | Elevator | 28%(528/1881) | Oct 14, 2026 |
| 3540 | Formula | 18%(26/141) | Oct 19, 2026 |
| 3541 | Given a string… | 21%(425/1963) | Oct 14, 2026 |
| 3542 | History of Football | 23%(287/1240) | Oct 16, 2026 |
| 3543 | iChess | 44%(1190/2700) | Oct 21, 2026 |
| 3544 | Journey with Pigs | 31%(1135/3580) | Oct 14, 2026 |
| 3545 | K’ak’-u-pakal and Mayan Script | 16%(30/186) | Oct 16, 2026 |
| 3546 | Sea battle | 34%(486/1395) | Oct 14, 2026 |
| 3547 | Cube evolvent | 26%(109/410) | Oct 16, 2026 |
| 3548 | Restoring the digits | 31%(200/639) | Oct 19, 2026 |
| 3549 | GSM phone | 12%(56/432) | Oct 19, 2026 |
| 3550 | AT – sequence | 34%(298/872) | Oct 14, 2026 |
| 3551 | Putin-chess | 20%(31/153) | Oct 19, 2026 |
| 3552 | Snatch! | 23%(73/306) | Oct 19, 2026 |
| 3553 | Task schedule | 58%(478/818) | Oct 19, 2026 |
| 3554 | Almost the shortest route | 25%(359/1390) | Oct 14, 2026 |
| 3555 | Cocktail | 21%(115/523) | Oct 19, 2026 |
| 3556 | Increasing subsequences | 23%(76/317) | Oct 16, 2026 |
| 3557 | Map Generator | 27%(484/1778) | Oct 19, 2026 |
| 3558 | Map Generator returns (MG-II) | 46%(153/330) | Oct 19, 2026 |
| 3559 | Trigonometric optimization | 10%(58/531) | Oct 19, 2026 |
| 3560 | Supersquare | 17%(40/224) | Oct 21, 2026 |
| 3561 | Pseudographical recognizer | 40%(1000/2462) | Oct 21, 2026 |
| 3562 | “Roman” corridor | 34%(193/556) | Oct 16, 2026 |
| 3563 | Parabolic teleports | 7%(17/221) | Oct 19, 2026 |
| 3564 | Magic pyramid | 16%(33/201) | Oct 19, 2026 |
| 3565 | Ants | 32%(3160/9747) | Oct 14, 2026 |
| 3566 | Building for UN | 44%(915/2060) | Oct 19, 2026 |
| 3567 | Cactus Reloaded | 32%(428/1324) | Oct 19, 2026 |
| 3568 | Diver | 49%(84/170) | Oct 19, 2026 |
| 3569 | Equation | 19%(134/700) | Oct 19, 2026 |
| 3570 | Fund Management | 20%(163/784) | Oct 19, 2026 |
| 3571 | Game | 27%(119/432) | Oct 19, 2026 |
| 3572 | Hanoi Towers | 49%(382/772) | Oct 19, 2026 |
| 3573 | I18n | 24%(369/1503) | Oct 19, 2026 |
| 3574 | Japanese Writing | 48%(123/252) | Oct 19, 2026 |
| 3575 | Kingdom Partitioning | 15%(43/285) | Oct 19, 2026 |
| 3576 | Language Recognition | 26%(546/2029) | Oct 19, 2026 |
| 3577 | Global Positioning System | 8%(108/1301) | Oct 16, 2026 |
| 3578 | Card Game | 11%(85/724) | Oct 16, 2026 |
| 3579 | Median | 34%(9738/28625) | Oct 18, 2026 |
| 3580 | SuperMemo | 29%(7358/24692) | Oct 14, 2026 |
| 3581 | Sequence | 22%(2413/10607) | Oct 14, 2026 |
| 3582 | Last Hit | 1%(8/655) | Oct 21, 2026 |
| 3583 | Text Message Formatting | 13%(142/1025) | Oct 21, 2026 |
| 3584 | Small Polynomial Factorization | 19%(66/334) | Oct 21, 2026 |
| 3585 | Accumulation Degree | 21%(2958/13878) | Oct 14, 2026 |
| 3586 | The missionaries and cannibals | 9%(92/936) | Oct 16, 2026 |
| 3587 | The Biggest Cake | 17%(631/3514) | Oct 14, 2026 |
| 3588 | The Downloading Task | 25%(374/1445) | Oct 14, 2026 |
| 3589 | Number-guessing Game | 71%(5447/7649) | Oct 14, 2026 |
| 3590 | The shuffle Problem | 33%(878/2658) | Oct 14, 2026 |
| 3591 | Ants and Aphides | 8%(32/373) | Oct 16, 2026 |
| 3592 | Instantaneous Transference | 22%(1820/8107) | Oct 14, 2026 |
| 3593 | Sea Base Exploration | 27%(458/1653) | Oct 21, 2026 |
| 3594 | Escort of Dr. Who How | 27%(791/2911) | Oct 14, 2026 |
| 3595 | Full Steiner Topologies | 35%(269/762) | Oct 19, 2026 |
| 3596 | Illuminated Planet | 30%(110/366) | Oct 16, 2026 |
| 3597 | Polygon Division | 53%(764/1439) | Oct 14, 2026 |
| 3598 | PopKart | 22%(250/1099) | Oct 14, 2026 |
| 3599 | Pumping Lemma | 35%(116/331) | Oct 21, 2026 |
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