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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 |
| 3433 | Road Accident | 30%(29/96) | Dec 9, 2025 |
| 3457 | Mineshaft | 10%(12/114) | Dec 10, 2025 |
| 3473 | Stochastic Finite State Automaton | 22%(26/117) | Dec 10, 2025 |
| 3474 | Ellipsoid | 19%(25/131) | Dec 10, 2025 |
| 3496 | Word Hyphenation | 8%(13/148) | Dec 3, 2025 |
| 3446 | Catch the Bus! | 35%(59/168) | Dec 10, 2025 |
| 3478 | Undergraduate Instruction Evaluation | 24%(55/229) | Dec 10, 2025 |
| 3466 | Distance to the Prey | 13%(35/253) | Dec 3, 2025 |
| 3490 | Jumping Frogs | 16%(46/285) | Dec 10, 2025 |
| 3454 | Hypertheseus | 56%(186/332) | Dec 10, 2025 |
| 3442 | Baseball | 33%(117/346) | Dec 3, 2025 |
| 3455 | Cheesy Chess | 37%(160/431) | Dec 10, 2025 |
| 3491 | Rotated Sky Charts | 7%(37/478) | Dec 10, 2025 |
| 3464 | Approximations | 5%(27/491) | Dec 10, 2025 |
| 3430 | Pizza schedule | 31%(157/492) | Nov 24, 2025 |
| 3426 | Doors and... more doors | 37%(190/504) | Dec 3, 2025 |
| 3451 | Money Money Money, Must Be Funny | 34%(181/524) | Dec 10, 2025 |
| 3448 | Roman Expressions | 47%(267/568) | Nov 26, 2025 |
| 3479 | RoBa Has a Second Art Gallery! | 14%(84/572) | Dec 10, 2025 |
| 3493 | Chessboard Puzzle | 47%(280/592) | Dec 3, 2025 |
| 3477 | System of Linear Equations | 14%(87/620) | Dec 10, 2025 |
| 3447 | Calendar of Events | 21%(142/661) | Dec 10, 2025 |
| 3423 | Automaton optimization | 52%(351/664) | Dec 10, 2025 |
| 3410 | Split convex polygon | 28%(198/704) | Dec 10, 2025 |
| 3453 | Soccer Tournament | 19%(167/851) | Dec 10, 2025 |
| 3418 | Quadratic Functions | 21%(182/863) | Dec 10, 2025 |
| 3403 | "Bloody Mary" | 4%(37/872) | Dec 10, 2025 |
| 3483 | Loan Scheduling | 54%(486/890) | Nov 25, 2025 |
| 3441 | Vacation Rentals | 25%(240/955) | Dec 10, 2025 |
| 3405 | Convex hull | 21%(216/993) | Dec 10, 2025 |
| 3472 | Holey Square Tiling | 30%(308/1017) | Dec 10, 2025 |
| 3459 | Projects | 42%(440/1024) | Dec 10, 2025 |
| 3495 | Bitwise XOR of Arithmetic Progression | 26%(275/1038) | Dec 10, 2025 |
| 3402 | Add a queen | 27%(288/1049) | Dec 3, 2025 |
| 3456 | Frobenius | 49%(539/1082) | Nov 25, 2025 |
| 3462 | Lucky Light | 38%(429/1124) | Nov 25, 2025 |
| 3489 | Knapsack I | 30%(342/1133) | Nov 25, 2025 |
| 3443 | Team Work | 30%(349/1146) | Dec 10, 2025 |
| 3482 | ‘JBC’ | 22%(266/1205) | Dec 10, 2025 |
| 3434 | Terrarium | 24%(294/1225) | Dec 3, 2025 |
| 3458 | Colour Sequence | 59%(846/1421) | Nov 25, 2025 |
| 3488 | Arne Saknussemm | 54%(778/1427) | Dec 10, 2025 |
| 3401 | String reduction | 32%(490/1525) | Dec 10, 2025 |
| 3452 | Railway Transportation | 32%(504/1566) | Dec 10, 2025 |
| 3431 | Texture Tile | 23%(411/1744) | Nov 25, 2025 |
| 3429 | Geometry with a ruler | 22%(395/1786) | Dec 10, 2025 |
| 3492 | Knapsack II | 25%(460/1809) | Nov 20, 2025 |
| 3499 | Containers | 25%(466/1837) | Dec 10, 2025 |
| 3467 | Cross Counting | 29%(540/1850) | Dec 10, 2025 |
| 3407 | Brookebond s'en va en guerre... | 47%(872/1854) | Dec 10, 2025 |
| 3409 | Broken line | 16%(305/1870) | Nov 24, 2025 |
| 3424 | Better security | 18%(356/1881) | Dec 10, 2025 |
| 3408 | The Domino Principle | 25%(487/1884) | Dec 3, 2025 |
| 3413 | RPG | 29%(572/1949) | Nov 20, 2025 |
| 3435 | Sudoku Checker | 44%(872/1976) | Nov 20, 2025 |
| 3400 | Dropping the stones | 35%(718/2004) | Nov 20, 2025 |
| 3416 | Crossing | 45%(909/2007) | Nov 24, 2025 |
| 3485 | Highway | 37%(752/2018) | Nov 26, 2025 |
| 3412 | Ray | 20%(442/2144) | Nov 20, 2025 |
| 3428 | Formatting function | 14%(343/2364) | Dec 10, 2025 |
| 3444 | Wavelet Compression | 64%(1542/2386) | Dec 10, 2025 |
| 3475 | Paper-, er, Transcript-Folding Game | 34%(835/2390) | Dec 10, 2025 |
| 3471 | Integral Roots | 14%(349/2457) | Dec 10, 2025 |
| 3439 | Server Relocation | 36%(949/2620) | Dec 10, 2025 |
| 3445 | Elementary Additions | 54%(1434/2631) | Dec 10, 2025 |
| 3449 | Geometric Shapes | 39%(1115/2819) | Dec 10, 2025 |
| 3486 | Computers | 37%(1090/2876) | Nov 20, 2025 |
| 3425 | Customer support | 46%(1356/2915) | Nov 24, 2025 |
| 3465 | Battle | 26%(770/2946) | Dec 3, 2025 |
| 3432 | Count Squares | 44%(1387/3123) | Nov 25, 2025 |
| 3470 | Walls | 16%(527/3200) | Dec 10, 2025 |
| 3419 | Difference Is Beautiful | 28%(952/3334) | Dec 10, 2025 |
| 3406 | Last digit | 30%(1022/3355) | Nov 20, 2025 |
| 3460 | Booksort | 45%(1546/3422) | Nov 26, 2025 |
| 3437 | Tree Grafting | 44%(1512/3433) | Nov 25, 2025 |
| 3476 | A Game with Colored Balls | 15%(557/3546) | Dec 10, 2025 |
| 3484 | Showstopper | 30%(1204/3990) | Dec 10, 2025 |
| 3480 | John | 49%(2027/4088) | Nov 20, 2025 |
| 3404 | Bridge over a rough river | 41%(1856/4503) | Nov 20, 2025 |
| 3427 | Ecology tax | 52%(2537/4789) | Nov 20, 2025 |
| 3497 | Assemble | 30%(1475/4864) | Nov 25, 2025 |
| 3440 | Coin Toss | 27%(1630/5899) | Dec 10, 2025 |
| 3420 | Quad Tiling | 44%(2635/5917) | Nov 20, 2025 |
| 3498 | March of the Penguins | 46%(2758/5974) | Dec 17, 2025 |
| 3411 | Paid Roads | 37%(3677/9719) | Nov 24, 2025 |
| 3438 | Look and Say | 60%(5975/9856) | Nov 20, 2025 |
| 3450 | Corporate Identity | 32%(3545/10973) | Dec 10, 2025 |
| 3422 | Kaka's Matrix Travels | 41%(5034/12266) | Dec 10, 2025 |
| 3421 | X-factor Chains | 32%(3959/12357) | Dec 9, 2025 |
| 3494 | Largest Submatrix of All 1’s | 33%(4219/12422) | Dec 6, 2025 |
| 3463 | Sightseeing | 35%(4682/13256) | Nov 25, 2025 |
| 3436 | ACM Computer Factory | 36%(4947/13496) | Dec 9, 2025 |
| 3487 | The Stable Marriage Problem | 31%(4342/13974) | Nov 25, 2025 |
| 3417 | Network | 25%(3721/14330) | Dec 10, 2025 |
| 3415 | Common Substrings | 33%(5790/17430) | Dec 10, 2025 |
| 3481 | Double Queue | 42%(10616/25218) | Dec 18, 2025 |
| 3469 | Dual Core CPU | 42%(12720/30091) | Dec 17, 2025 |
| 3414 | Pots | 39%(16091/40247) | Dec 15, 2025 |
| 3461 | Oulipo | 37%(28300/76057) | Dec 9, 2025 |
| 3468 | A Simple Problem with Integers | 30%(65650/215079) | Dec 17, 2025 |
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