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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 |
| 2310 | Cubic Tick-Tack-Toe | 11%(121/1014) | Mar 5, 2026 |
| 2383 | Circle Drawing | 14%(366/2480) | Jan 8, 2026 |
| 2333 | Beach cut | 19%(197/1015) | Nov 21, 2025 |
| 2347 | Equations | 19%(183/920) | Mar 5, 2026 |
| 2314 | POJ language | 20%(91/440) | Jan 7, 2026 |
| 2399 | A Mayor Problem | 21%(58/272) | Dec 9, 2025 |
| 2391 | Ombrophobic Bovines | 21%(5092/23549) | Mar 6, 2026 |
| 2300 | Up the Ante | 22%(86/379) | Dec 9, 2025 |
| 2360 | Trains | 22%(55/242) | Mar 5, 2026 |
| 2308 | Dearboy's Puzzle | 22%(498/2176) | Dec 9, 2025 |
| 2338 | Basic | 24%(251/1030) | Apr 3, 2026 |
| 2375 | Cow Ski Area | 25%(1230/4915) | Apr 3, 2026 |
| 2376 | Cleaning Shifts | 25%(15243/60778) | Apr 13, 2026 |
| 2379 | ACM Rank Table | 25%(1700/6757) | Apr 3, 2026 |
| 2319 | COMPRESS | 25%(151/595) | Apr 3, 2026 |
| 2303 | Russian Dolls | 25%(351/1365) | Dec 9, 2025 |
| 2337 | Catenyms | 26%(3822/14592) | Mar 5, 2026 |
| 2306 | Genealogical Research | 26%(88/332) | Mar 5, 2026 |
| 2382 | Radio Coverage | 26%(280/1051) | Dec 9, 2025 |
| 2354 | Titanic | 26%(986/3675) | Apr 7, 2026 |
| 2381 | Random Gap | 27%(1551/5719) | Apr 3, 2026 |
| 2368 | Buttons | 27%(1634/6010) | Apr 3, 2026 |
| 2307 | Treasure Map | 27%(91/331) | Dec 9, 2025 |
| 2331 | Water pipe | 28%(790/2766) | Dec 9, 2025 |
| 2364 | Faucet Flow | 28%(134/465) | Dec 9, 2025 |
| 2351 | Time Zones | 29%(816/2813) | Apr 3, 2026 |
| 2341 | Spell checker | 29%(274/943) | Apr 3, 2026 |
| 2380 | Sales Report | 29%(629/2136) | Apr 3, 2026 |
| 2349 | Arctic Network | 30%(12279/40804) | Apr 10, 2026 |
| 2322 | PLANKS | 30%(125/413) | Dec 9, 2025 |
| 2387 | Til the Cows Come Home | 31%(44460/141927) | Apr 11, 2026 |
| 2329 | Nearest number - 2 | 31%(1466/4675) | Apr 3, 2026 |
| 2361 | Tic Tac Toe | 31%(2179/6842) | Apr 3, 2026 |
| 2353 | Ministry | 32%(1946/6057) | Mar 1, 2026 |
| 2362 | Square | 32%(10536/32585) | Apr 8, 2026 |
| 2343 | Airline company | 32%(151/461) | Dec 9, 2025 |
| 2335 | Temple of Dune | 32%(211/640) | Apr 5, 2026 |
| 2374 | Fence Obstacle Course | 33%(1265/3747) | Apr 5, 2026 |
| 2312 | Battle City | 33%(4622/13641) | Apr 14, 2026 |
| 2373 | Dividing the Path | 33%(2710/7975) | Apr 6, 2026 |
| 2332 | One is good, but two is better | 34%(162/468) | Mar 5, 2026 |
| 2328 | Guessing Game | 34%(5642/16210) | Apr 5, 2026 |
| 2365 | Rope | 34%(2699/7730) | Nov 20, 2025 |
| 2355 | Railway tickets | 35%(1416/3995) | Dec 14, 2025 |
| 2372 | D++ Again | 35%(210/592) | Apr 3, 2026 |
| 2311 | Cutting Game | 36%(3385/9380) | Apr 13, 2026 |
| 2394 | Checking an Alibi | 36%(2903/7954) | Mar 25, 2026 |
| 2396 | Budget | 36%(3804/10368) | Apr 3, 2026 |
| 2366 | Sacrament of the sum | 36%(4072/11097) | Apr 3, 2026 |
| 2397 | Spiderman | 37%(789/2104) | Nov 21, 2025 |
| 2359 | Questions | 38%(753/1978) | Nov 25, 2025 |
| 2313 | Sequence | 38%(1698/4371) | Apr 3, 2026 |
| 2348 | Euclid's Game | 39%(5500/13938) | Apr 3, 2026 |
| 2395 | Out of Hay | 39%(9493/23765) | Apr 3, 2026 |
| 2320 | SHEET | 40%(155/385) | Apr 3, 2026 |
| 2377 | Bad Cowtractors | 40%(9320/22986) | Apr 3, 2026 |
| 2352 | Stars | 41%(29700/71487) | Apr 12, 2026 |
| 2340 | Memory management | 41%(326/783) | Apr 3, 2026 |
| 2324 | Intellectual Property | 41%(76/182) | Dec 9, 2025 |
| 2384 | Harder Sokoban Problem | 41%(391/935) | Mar 6, 2026 |
| 2356 | Find a multiple | 42%(5545/13198) | Apr 10, 2026 |
| 2315 | Football Game | 42%(307/729) | Apr 5, 2026 |
| 2305 | Basic remains | 42%(2645/6175) | Apr 3, 2026 |
| 2334 | Simple prefix compression | 42%(886/2066) | Jan 7, 2026 |
| 2318 | TOYS | 43%(12091/27683) | Apr 10, 2026 |
| 2344 | Nikifor | 43%(114/261) | Apr 3, 2026 |
| 2358 | Queens in peaceful positions | 44%(591/1333) | Apr 3, 2026 |
| 2325 | Persistent Numbers | 46%(2439/5248) | Mar 5, 2026 |
| 2317 | SHAKE | 47%(332/705) | Dec 9, 2025 |
| 2392 | Space Elevator | 47%(8303/17493) | Apr 3, 2026 |
| 2330 | Advanced ASCII Cubes | 47%(390/821) | Dec 9, 2025 |
| 2386 | Lake Counting | 47%(34601/72776) | Apr 10, 2026 |
| 2301 | Beat the Spread! | 47%(10187/21412) | Apr 14, 2026 |
| 2302 | Traditional BINGO | 47%(599/1257) | Apr 3, 2026 |
| 2345 | Central heating | 47%(534/1114) | Apr 3, 2026 |
| 2363 | Blocks | 47%(4087/8516) | Apr 3, 2026 |
| 2393 | Yogurt factory | 48%(11807/24442) | Apr 3, 2026 |
| 2357 | Labyrinth | 48%(331/677) | Dec 9, 2025 |
| 2336 | Ferry Loading II | 49%(2309/4709) | Apr 5, 2026 |
| 2350 | Above Average | 49%(8941/18035) | Apr 14, 2026 |
| 2321 | GYM | 49%(254/511) | Apr 3, 2026 |
| 2385 | Apple Catching | 49%(10387/20865) | Apr 3, 2026 |
| 2323 | PERMS | 50%(718/1432) | Apr 3, 2026 |
| 2389 | Bull Math | 51%(11790/23114) | Apr 11, 2026 |
| 2316 | SPIN | 51%(3424/6628) | Apr 3, 2026 |
| 2327 | Dumb Bones | 52%(217/416) | Apr 5, 2026 |
| 2371 | Questions and answers | 52%(6386/12140) | Apr 3, 2026 |
| 2369 | Permutations | 54%(2117/3872) | Nov 20, 2025 |
| 2326 | Major Scales | 54%(259/473) | Mar 19, 2026 |
| 2342 | Anniversary party | 56%(10070/17897) | Apr 3, 2026 |
| 2388 | Who's in the Middle | 56%(38189/67149) | Apr 14, 2026 |
| 2339 | Rock, Scissors, Paper | 57%(2637/4609) | Apr 3, 2026 |
| 2398 | Toy Storage | 57%(5865/10228) | Apr 14, 2026 |
| 2367 | Genealogical tree | 59%(8732/14724) | Mar 31, 2026 |
| 2390 | Bank Interest | 59%(10818/18239) | Mar 6, 2026 |
| 2378 | Tree Cutting | 59%(4118/6905) | Apr 3, 2026 |
| 2304 | Combination Lock | 60%(3168/5244) | Nov 25, 2025 |
| 2309 | BST | 60%(7468/12267) | Apr 2, 2026 |
| 2346 | Lucky tickets | 65%(2352/3587) | Apr 3, 2026 |
| 2370 | Democracy in danger | 73%(2840/3889) | Apr 3, 2026 |
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