| ID | Title | Ratio(AC/submit) |
Date |
| 3582 | Last Hit | 1%(8/653) | Jun 3, 2026 |
| 3563 | Parabolic teleports | 6%(15/219) | Mar 22, 2026 |
| 3591 | Ants and Aphides | 8%(30/370) | May 9, 2026 |
| 3577 | Global Positioning System | 8%(106/1299) | Dec 10, 2025 |
| 3586 | The missionaries and cannibals | 9%(90/934) | Apr 4, 2026 |
| 3559 | Trigonometric optimization | 10%(56/527) | Mar 16, 2026 |
| 3578 | Card Game | 11%(83/721) | May 8, 2026 |
| 3516 | Johnny Hates Math | 12%(446/3714) | Apr 4, 2026 |
| 3549 | GSM phone | 12%(54/430) | Jun 12, 2026 |
| 3534 | Escape of Life and Death | 12%(334/2620) | Sep 5, 2026 |
| 3583 | Text Message Formatting | 13%(140/1023) | Jun 12, 2026 |
| 3575 | Kingdom Partitioning | 14%(41/283) | Mar 18, 2026 |
| 3545 | K’ak’-u-pakal and Mayan Script | 15%(28/184) | Feb 25, 2026 |
| 3564 | Magic pyramid | 15%(31/199) | Mar 16, 2026 |
| 3530 | A Modular Arithmetic Challenge | 16%(341/2114) | Sep 5, 2026 |
| 3540 | Formula | 17%(24/139) | Mar 18, 2026 |
| 3531 | Alternating Sum of Digits | 17%(46/266) | Mar 22, 2026 |
| 3527 | Generalized Connect Four | 17%(121/692) | Mar 6, 2026 |
| 3587 | The Biggest Cake | 17%(630/3513) | Aug 27, 2026 |
| 3560 | Supersquare | 18%(39/215) | Mar 16, 2026 |
| 3569 | Equation | 18%(132/697) | Mar 17, 2026 |
| 3551 | Putin-chess | 19%(29/151) | Mar 23, 2026 |
| 3504 | Obfuscation | 19%(605/3146) | Aug 15, 2026 |
| 3584 | Small Polynomial Factorization | 19%(64/332) | Dec 3, 2025 |
| 3502 | Flight Safety | 20%(175/858) | Mar 16, 2026 |
| 3570 | Fund Management | 20%(161/781) | Mar 18, 2026 |
| 3514 | The Writers' Club | 20%(189/906) | Mar 6, 2026 |
| 3513 | Let's Go to the Movies | 20%(598/2853) | Aug 29, 2026 |
| 3511 | Fermat's Christmas Theorem | 21%(1906/8976) | Aug 7, 2026 |
| 3585 | Accumulation Degree | 21%(2943/13839) | Sep 4, 2026 |
| 3555 | Cocktail | 21%(112/520) | Aug 26, 2026 |
| 3541 | Given a string… | 21%(423/1961) | Aug 29, 2026 |
| 3592 | Instantaneous Transference | 22%(1819/8105) | Aug 8, 2026 |
| 3512 | Incidental Points | 22%(1196/5327) | Aug 8, 2026 |
| 3598 | PopKart | 22%(248/1097) | Apr 4, 2026 |
| 3529 | Matrix Analysis | 22%(39/172) | Jun 27, 2026 |
| 3581 | Sequence | 22%(2412/10606) | Aug 7, 2026 |
| 3523 | The Morning after Halloween | 22%(809/3525) | Sep 2, 2026 |
| 3542 | History of Football | 22%(284/1237) | Apr 4, 2026 |
| 3520 | Lowest Pyramid | 23%(87/377) | Dec 10, 2025 |
| 3552 | Snatch! | 23%(71/304) | Jun 12, 2026 |
| 3556 | Increasing subsequences | 23%(74/312) | Aug 28, 2026 |
| 3573 | I18n | 24%(367/1501) | Mar 17, 2026 |
| 3538 | Domestic Networks | 25%(292/1161) | Mar 18, 2026 |
| 3500 | Youth Hostel Dorm | 25%(117/457) | Jun 12, 2026 |
| 3554 | Almost the shortest route | 25%(358/1389) | Sep 5, 2026 |
| 3588 | The Downloading Task | 25%(373/1443) | Sep 5, 2026 |
| 3547 | Cube evolvent | 26%(106/406) | Mar 21, 2026 |
| 3501 | Escape from Enemy Territory | 26%(852/3209) | Aug 9, 2026 |
| 3576 | Language Recognition | 26%(543/2026) | May 17, 2026 |
| 3557 | Map Generator | 27%(482/1776) | Sep 4, 2026 |
| 3594 | Escort of Dr. Who How | 27%(790/2910) | Aug 13, 2026 |
| 3571 | Game | 27%(117/430) | Mar 18, 2026 |
| 3593 | Sea Base Exploration | 27%(457/1648) | Sep 5, 2026 |
| 3510 | A Tale from the Dark Side of the Moon | 27%(944/3402) | Aug 9, 2026 |
| 3508 | Hide That Number | 28%(2011/7180) | Aug 7, 2026 |
| 3539 | Elevator | 28%(526/1878) | Aug 27, 2026 |
| 3515 | Moving Sticks | 29%(83/283) | Mar 16, 2026 |
| 3506 | Walk | 29%(157/534) | Dec 10, 2025 |
| 3526 | The Teacher’s Side of Math | 29%(250/849) | Jan 7, 2026 |
| 3596 | Illuminated Planet | 29%(108/364) | Apr 4, 2026 |
| 3580 | SuperMemo | 29%(7356/24690) | Aug 6, 2026 |
| 3548 | Restoring the digits | 31%(198/636) | Mar 16, 2026 |
| 3544 | Journey with Pigs | 31%(1134/3579) | Aug 8, 2026 |
| 3567 | Cactus Reloaded | 32%(425/1321) | Mar 17, 2026 |
| 3565 | Ants | 32%(3159/9744) | Aug 15, 2026 |
| 3590 | The shuffle Problem | 33%(877/2657) | Aug 24, 2026 |
| 3532 | Resistance | 33%(524/1567) | Aug 29, 2026 |
| 3579 | Median | 34%(9733/28619) | Sep 6, 2026 |
| 3550 | AT – sequence | 34%(297/871) | Sep 5, 2026 |
| 3562 | “Roman” corridor | 34%(190/553) | Nov 26, 2025 |
| 3546 | Sea battle | 34%(485/1394) | Aug 15, 2026 |
| 3595 | Full Steiner Topologies | 35%(267/760) | Apr 20, 2026 |
| 3503 | Summits | 35%(484/1372) | Aug 26, 2026 |
| 3599 | Pumping Lemma | 35%(116/325) | Dec 3, 2025 |
| 3537 | Crosses and Crosses | 37%(2188/5799) | Aug 7, 2026 |
| 3509 | Rotating Rings | 38%(818/2127) | Aug 9, 2026 |
| 3536 | Beer Refrigerator | 39%(2330/5913) | Jul 24, 2026 |
| 3521 | Geometric Map | 39%(159/403) | Dec 10, 2025 |
| 3535 | A+B | 40%(407/999) | Aug 27, 2026 |
| 3561 | Pseudographical recognizer | 40%(1000/2452) | Apr 4, 2026 |
| 3525 | Most Distant Point from the Sea | 43%(3324/7724) | Aug 7, 2026 |
| 3566 | Building for UN | 44%(913/2058) | Mar 18, 2026 |
| 3543 | iChess | 44%(1188/2672) | Aug 7, 2026 |
| 3558 | Map Generator returns (MG-II) | 46%(151/328) | Apr 4, 2026 |
| 3524 | Bug Hunt | 46%(404/865) | Aug 28, 2026 |
| 3507 | Judging Olympia | 47%(4329/9184) | Apr 4, 2026 |
| 3528 | Ultimate Weapon | 47%(1279/2698) | Aug 9, 2026 |
| 3574 | Japanese Writing | 48%(121/250) | Mar 17, 2026 |
| 3568 | Diver | 49%(82/167) | Mar 18, 2026 |
| 3572 | Hanoi Towers | 49%(380/770) | Mar 17, 2026 |
| 3522 | Slim Span | 52%(6174/11725) | Aug 27, 2026 |
| 3597 | Polygon Division | 53%(763/1438) | Aug 13, 2026 |
| 3517 | And Then There Was One | 54%(3625/6606) | Jul 1, 2026 |
| 3518 | Prime Gap | 56%(7070/12584) | Aug 23, 2026 |
| 3519 | Minimal Backgammon | 57%(774/1356) | Aug 9, 2026 |
| 3553 | Task schedule | 58%(476/816) | Jul 17, 2026 |
| 3533 | Light Switching Game | 59%(404/675) | Aug 29, 2026 |
| 3505 | Tower Parking | 61%(1241/2026) | Aug 4, 2026 |
| 3589 | Number-guessing Game | 71%(5446/7648) | Apr 4, 2026 |
