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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 |
| 2517 | Cover | 12%(28/231) | Mar 6, 2026 |
| 2544 | PreQueL | 14%(51/344) | Mar 6, 2026 |
| 2557 | Fold | 41%(162/395) | Dec 9, 2025 |
| 2542 | Fool Game | 19%(78/401) | Mar 6, 2026 |
| 2534 | Falling cards | 18%(73/405) | Dec 9, 2025 |
| 2554 | Fixed Partition Contest Management | 30%(129/420) | Dec 9, 2025 |
| 2523 | ASCII Labyrinth | 37%(164/434) | Dec 9, 2025 |
| 2548 | Subway | 38%(181/472) | Mar 6, 2026 |
| 2543 | Spreadsheet | 23%(115/484) | Dec 9, 2025 |
| 2532 | Burned Calendar | 26%(139/517) | Mar 6, 2026 |
| 2563 | Demerit Points | 33%(178/536) | Dec 9, 2025 |
| 2529 | Queuing at the doctors | 33%(195/579) | Mar 6, 2026 |
| 2582 | Finding Nemo | 42%(246/582) | Mar 6, 2026 |
| 2518 | Little guys' game | 29%(183/614) | Mar 6, 2026 |
| 2589 | Snap | 38%(253/664) | Dec 9, 2025 |
| 2580 | The Door/Key Problem | 27%(202/725) | Mar 6, 2026 |
| 2571 | Global Roaming | 49%(406/826) | Mar 6, 2026 |
| 2592 | Standard Point System | 24%(206/840) | Dec 9, 2025 |
| 2574 | Saskatchewan | 24%(222/894) | Mar 6, 2026 |
| 2512 | Chessboard in FEN | 40%(380/941) | Dec 9, 2025 |
| 2547 | No Tipping | 36%(347/942) | Dec 1, 2025 |
| 2522 | Partitioning for fun and profit | 31%(315/1004) | Mar 6, 2026 |
| 2598 | Match Throwing Game | 29%(328/1094) | Dec 9, 2025 |
| 2515 | Birthday Cake | 36%(433/1172) | Mar 6, 2026 |
| 2525 | Text Formalization | 20%(253/1249) | Nov 25, 2025 |
| 2558 | Genetic Code | 53%(697/1292) | Nov 20, 2025 |
| 2561 | Language Cardinality | 20%(267/1308) | Mar 6, 2026 |
| 2519 | Cutting Necklace | 12%(178/1395) | Mar 6, 2026 |
| 2530 | Tetris Alphabet | 40%(571/1399) | Mar 6, 2026 |
| 2556 | Edge | 67%(941/1400) | Nov 25, 2025 |
| 2569 | Etaoin Shrdlu | 49%(706/1424) | Dec 9, 2025 |
| 2527 | Polynomial Remains | 56%(835/1482) | Nov 25, 2025 |
| 2511 | The Top Shelf | 27%(421/1524) | Jan 9, 2026 |
| 2555 | Drink, on Ice | 58%(889/1527) | Nov 25, 2025 |
| 2597 | Line Segment Erase | 28%(443/1539) | Jan 8, 2026 |
| 2588 | Snakes | 31%(487/1554) | Dec 9, 2025 |
| 2596 | Dice Stacking | 24%(391/1597) | Dec 1, 2025 |
| 2504 | Bounding box | 39%(662/1683) | Dec 9, 2025 |
| 2541 | Binary Witch | 37%(633/1704) | Jan 7, 2026 |
| 2510 | Tullia and Chocolate II | 20%(381/1859) | Jan 7, 2026 |
| 2550 | Zipf's Law | 30%(591/1937) | Dec 9, 2025 |
| 2568 | Decode the Tree | 39%(783/1995) | Dec 31, 2025 |
| 2514 | Ridiculous Addition | 21%(429/2037) | Dec 9, 2025 |
| 2587 | Airline Hub | 32%(669/2045) | Mar 6, 2026 |
| 2577 | Interpreter | 34%(776/2261) | Mar 6, 2026 |
| 2500 | Pia's Party | 22%(517/2279) | Mar 6, 2026 |
| 2579 | Blurred Vision | 70%(1668/2364) | Mar 6, 2026 |
| 2565 | Average is not Fast Enough! | 43%(1021/2366) | Nov 20, 2025 |
| 2599 | A funny game | 42%(1011/2407) | Mar 6, 2026 |
| 2508 | Conic distance | 41%(1010/2452) | Nov 20, 2025 |
| 2595 | Min-Max | 22%(575/2577) | Dec 1, 2025 |
| 2539 | Division | 25%(667/2600) | Mar 6, 2026 |
| 2526 | Center of symmetry | 44%(1181/2637) | Nov 21, 2025 |
| 2581 | Exact Change Only | 34%(951/2756) | Mar 6, 2026 |
| 2520 | DNA Sequence Alignment | 11%(312/2774) | Feb 4, 2026 |
| 2537 | Tight words | 46%(1346/2875) | Mar 6, 2026 |
| 2564 | Edit Step Ladders | 35%(1041/2898) | Mar 6, 2026 |
| 2552 | Assistance Required | 58%(1739/2996) | Mar 6, 2026 |
| 2567 | Code the Tree | 38%(1198/3088) | Dec 9, 2025 |
| 2585 | Window Pains | 48%(1650/3369) | Mar 8, 2026 |
| 2572 | Hard to Believe, but True! | 57%(2161/3772) | Mar 6, 2026 |
| 2584 | T-Shirt Gumbo | 47%(1998/4198) | Mar 6, 2026 |
| 2540 | Hotter Colder | 38%(1634/4200) | Mar 6, 2026 |
| 2570 | Fiber Network | 43%(1883/4364) | Nov 21, 2025 |
| 2535 | Very Simple Problem | 37%(1724/4636) | Mar 6, 2026 |
| 2501 | Average Speed | 44%(2450/5462) | Mar 10, 2026 |
| 2507 | Crossed ladders | 37%(2185/5773) | Nov 20, 2025 |
| 2573 | Bridge | 32%(2001/6156) | Mar 2, 2026 |
| 2583 | Series Determination | 65%(4333/6604) | Mar 6, 2026 |
| 2545 | Hamming Problem | 46%(3168/6855) | Mar 6, 2026 |
| 2505 | A multiplication game | 49%(4086/8213) | Mar 6, 2026 |
| 2546 | Circular Area | 34%(2862/8327) | Mar 6, 2026 |
| 2590 | Steps | 45%(3860/8469) | Mar 6, 2026 |
| 2578 | Keep on Truckin' | 75%(6643/8783) | Mar 6, 2026 |
| 2591 | Set Definition | 46%(4729/10129) | Mar 6, 2026 |
| 2560 | Freckles | 45%(4692/10387) | Mar 6, 2026 |
| 2536 | Gopher II | 39%(4414/11135) | Mar 6, 2026 |
| 2576 | Tug of War | 28%(3239/11265) | Mar 6, 2026 |
| 2538 | WERTYU | 45%(5182/11331) | Nov 23, 2025 |
| 2562 | Primary Arithmetic | 36%(4473/12310) | Mar 6, 2026 |
| 2551 | Ones | 55%(7009/12552) | Mar 6, 2026 |
| 2594 | Treasure Exploration | 40%(5109/12636) | Mar 6, 2026 |
| 2521 | How much did the businessman lose | 62%(8487/13651) | Mar 6, 2026 |
| 2553 | The Bottom of a Graph | 40%(5808/14329) | Jan 18, 2026 |
| 2549 | Sumsets | 27%(4322/15811) | Dec 9, 2025 |
| 2566 | Bound Found | 31%(5016/16121) | Mar 9, 2026 |
| 2575 | Jolly Jumpers | 29%(5570/18592) | Mar 6, 2026 |
| 2506 | Tiling | 42%(7946/18605) | Jan 23, 2026 |
| 2509 | Peter's smokes | 41%(7723/18779) | Mar 6, 2026 |
| 2531 | Network Saboteur | 51%(10178/19954) | Mar 6, 2026 |
| 2502 | Subway | 31%(6438/20433) | Mar 6, 2026 |
| 2593 | Max Sequence | 41%(8662/21000) | Jan 17, 2026 |
| 2516 | Minimum Cost | 35%(7745/21946) | Mar 6, 2026 |
| 2586 | Y2K Accounting Bug | 50%(11321/22588) | Mar 6, 2026 |
| 2559 | Largest Rectangle in a Histogram | 32%(14460/44979) | Mar 2, 2026 |
| 2513 | Colored Sticks | 25%(11681/45353) | Mar 6, 2026 |
| 2524 | Ubiquitous Religions | 45%(26433/58095) | Mar 6, 2026 |
| 2503 | Babelfish | 38%(30377/77988) | Feb 25, 2026 |
| 2533 | Longest Ordered Subsequence | 44%(39486/88517) | Mar 7, 2026 |
| 2528 | Mayor's posters | 28%(30877/109386) | Mar 10, 2026 |
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