| ID | Title | Ratio(AC/submit) |
Date |
| 3202 | A Very Simple Compiler | 3%(3/90) | Dec 26, 2024 |
| 3203 | Incremental Python Parsing | 3%(9/229) | May 27, 2025 |
| 3236 | Michelle's Evaluation | 6%(115/1647) | Dec 8, 2024 |
| 3247 | Robots | 9%(25/251) | Sep 15, 2024 |
| 3209 | From Pythagoras to … | 12%(372/2920) | Dec 7, 2024 |
| 3223 | Football Game | 13%(115/835) | Sep 5, 2025 |
| 3293 | Rectilinear polygon | 14%(342/2368) | Sep 2, 2025 |
| 3234 | The Kylin Den | 14%(19/128) | Mar 12, 2024 |
| 3240 | Solution to the n2 − 1 Puzzle | 15%(72/463) | Sep 6, 2025 |
| 3218 | Alignments | 16%(253/1543) | Dec 30, 2024 |
| 3206 | Ikki's Story III - Rescue frkstyc! | 16%(128/770) | Sep 1, 2025 |
| 3231 | FlashGet | 16%(523/3139) | Sep 6, 2025 |
| 3289 | Moonshine | 17%(137/784) | May 30, 2025 |
| 3246 | Game | 18%(580/3056) | Apr 18, 2025 |
| 3248 | Soldier | 19%(100/526) | Sep 6, 2025 |
| 3251 | Big Square | 19%(1198/6256) | Sep 8, 2025 |
| 3215 | Median of Lines | 20%(313/1508) | Sep 1, 2025 |
| 3249 | Test for Job | 21%(4143/18978) | Jun 26, 2025 |
| 3238 | A Coin Game | 22%(91/406) | Sep 1, 2025 |
| 3214 | Heap | 22%(759/3339) | Sep 14, 2024 |
| 3235 | Super Knight | 23%(53/229) | Aug 29, 2025 |
| 3285 | Point of view in Flatland | 23%(235/992) | Sep 10, 2025 |
| 3212 | Rescue Alice | 23%(382/1605) | Sep 1, 2025 |
| 3243 | Clever Y | 24%(2990/12118) | Sep 2, 2025 |
| 3232 | Accelerator | 24%(1234/4983) | Sep 2, 2025 |
| 3237 | Tree | 25%(4128/16466) | Sep 10, 2025 |
| 3284 | Eventually periodic sequence | 25%(189/744) | Sep 2, 2025 |
| 3271 | Lilypad Pond | 25%(482/1888) | Jul 20, 2023 |
| 3220 | Context-Free Languages | 25%(251/968) | Nov 3, 2022 |
| 3225 | Help with Intervals | 26%(3954/15151) | Aug 12, 2025 |
| 3216 | Repairing Company | 26%(2201/8381) | Sep 22, 2025 |
| 3242 | 3-dimensional Musical Water-fence | 26%(51/190) | Sep 4, 2025 |
| 3227 | Mountains | 27%(553/2037) | Nov 9, 2024 |
| 3274 | Gold Balanced Lineup | 27%(5362/19316) | Aug 29, 2025 |
| 3229 | The Best Travel Design | 28%(477/1703) | Sep 2, 2025 |
| 3277 | City Horizon | 28%(6110/21700) | Sep 4, 2025 |
| 3272 | Cow Traffic | 28%(1205/4252) | Sep 1, 2025 |
| 3266 | Cow School | 28%(346/1207) | Sep 5, 2025 |
| 3245 | Sequence Partitioning | 29%(493/1698) | Dec 22, 2024 |
| 3204 | Ikki's Story I - Road Reconstruction | 29%(2626/9029) | Sep 19, 2025 |
| 3294 | Life Forms | 29%(6507/22249) | Sep 25, 2025 |
| 3205 | Ikki's Story II - War with TN | 29%(278/943) | Nov 27, 2024 |
| 3200 | Babel Towers | 29%(324/1093) | Nov 27, 2024 |
| 3283 | Card Hands | 29%(1045/3516) | Sep 8, 2025 |
| 3278 | Catch That Cow | 30%(68792/227622) | Sep 29, 2025 |
| 3241 | Object Clustering | 31%(1039/3293) | Jun 24, 2025 |
| 3296 | Rinse | 31%(239/750) | Feb 23, 2025 |
| 3201 | Little Quilt | 32%(274/855) | Sep 2, 2025 |
| 3213 | PM3 | 32%(1617/5027) | Jan 3, 2025 |
| 3260 | The Fewest Coins | 32%(3298/10204) | Sep 2, 2025 |
| 3211 | Washing Clothes | 32%(3839/11869) | Sep 14, 2025 |
| 3288 | Mall Mania | 32%(426/1313) | Sep 21, 2024 |
| 3253 | Fence Repair | 32%(33855/104276) | Sep 24, 2025 |
| 3255 | Roadblocks | 33%(10792/32586) | Oct 1, 2025 |
| 3269 | Building A New Barn | 33%(1629/4849) | Sep 1, 2025 |
| 3250 | Bad Hair Day | 33%(12785/37990) | Oct 8, 2025 |
| 3217 | Eugenics | 33%(388/1149) | Sep 5, 2025 |
| 3299 | Humidex | 33%(10922/32151) | Sep 28, 2025 |
| 3291 | Cousins | 34%(282/820) | Sep 1, 2025 |
| 3244 | Difference between Triplets | 34%(1130/3275) | Sep 4, 2025 |
| 3279 | Fliptile | 35%(12908/36820) | Sep 22, 2025 |
| 3228 | Gold Transportation | 35%(1453/4130) | May 24, 2024 |
| 3239 | Solution to the n Queens Puzzle | 35%(1745/4959) | Sep 1, 2025 |
| 3207 | Ikki's Story IV - Panda's Trick | 35%(4836/13666) | Aug 9, 2025 |
| 3273 | Monthly Expense | 36%(19732/54330) | Sep 27, 2025 |
| 3259 | Wormholes | 36%(37365/101901) | Oct 9, 2025 |
| 3287 | The Trip, 2007 | 37%(1224/3286) | Jul 22, 2024 |
| 3295 | Tautology | 37%(8117/21480) | Jun 26, 2025 |
| 3270 | Cow Sorting | 38%(3494/9040) | Sep 20, 2025 |
| 3297 | Open Source | 38%(794/2039) | Oct 23, 2024 |
| 3222 | Edge Pairing | 39%(454/1164) | Sep 17, 2024 |
| 3233 | Matrix Power Series | 39%(16588/41969) | Sep 15, 2025 |
| 3226 | String's Puzzle | 39%(1027/2593) | Sep 6, 2025 |
| 3282 | Ferry Loading IV | 39%(903/2275) | Dec 3, 2024 |
| 3265 | Problem Solving | 39%(820/2060) | Sep 5, 2025 |
| 3263 | Tallest Cow | 40%(5060/12405) | Sep 27, 2025 |
| 3258 | River Hopscotch | 41%(14677/35749) | Oct 8, 2025 |
| 3256 | Cow Picnic | 41%(2617/6336) | Sep 28, 2025 |
| 3257 | Cow Roller Coaster | 41%(1408/3361) | Sep 1, 2025 |
| 3219 | Binomial Coefficients | 41%(3202/7626) | Sep 1, 2025 |
| 3230 | Travel | 41%(2086/4967) | Sep 29, 2024 |
| 3252 | Round Numbers | 42%(10188/23820) | Sep 26, 2025 |
| 3261 | Milk Patterns | 42%(9705/22689) | Sep 18, 2025 |
| 3262 | Protecting the Flowers | 42%(8162/19071) | Oct 8, 2025 |
| 3264 | Balanced Lineup | 42%(44285/103143) | Oct 9, 2025 |
| 3298 | Antimonotonicity | 43%(1378/3178) | Sep 1, 2025 |
| 3281 | Dining | 43%(13347/30680) | Sep 17, 2025 |
| 3275 | Ranking the Cows | 43%(1939/4452) | Sep 5, 2025 |
| 3268 | Silver Cow Party | 44%(22550/50830) | Sep 24, 2025 |
| 3292 | Semi-prime H-numbers | 45%(6088/13365) | May 31, 2025 |
| 3280 | Cheapest Palindrome | 45%(9722/21285) | Sep 26, 2025 |
| 3276 | Face The Right Way | 45%(4470/9744) | Sep 25, 2025 |
| 3290 | WFF 'N PROOF | 46%(432/934) | May 10, 2023 |
| 3267 | The Cow Lexicon | 47%(6111/12773) | May 25, 2025 |
| 3224 | Go for Lab Cup! | 50%(5049/9925) | Sep 5, 2025 |
| 3208 | Apocalypse Someday | 51%(1840/3586) | Sep 25, 2025 |
| 3254 | Corn Fields | 51%(14613/28165) | Sep 25, 2025 |
| 3286 | How many 0's? | 52%(2258/4273) | Sep 2, 2025 |
| 3221 | Diamond Puzzle | 54%(903/1657) | Nov 25, 2024 |
| 3210 | Coins | 64%(5273/8131) | Sep 1, 2025 |
