| ID | Title | Ratio(AC/submit) |
Date |
| 1345 | Address Recovery | 5%(8/156) | 2025-5-12 |
| 1360 | Blue x Red = Bang | 9%(29/307) | 2025-5-13 |
| 1395 | Cog-Wheels | 12%(283/2350) | 2025-4-29 |
| 1373 | L-system | 12%(150/1172) | 2024-9-20 |
| 1346 | Board of Directors Meeting | 14%(19/134) | 2022-8-13 |
| 1355 | Selecting the Optimal Teaching Fiends | 14%(170/1179) | 2024-7-22 |
| 1361 | JaWs | 15%(31/201) | 2022-8-28 |
| 1348 | Computing | 15%(306/1932) | 2024-12-27 |
| 1347 | Triangle | 18%(76/410) | 2025-5-13 |
| 1368 | Puzzle | 19%(157/791) | 2024-8-16 |
| 1341 | The Strongest Subchains | 22%(180/817) | 2024-10-23 |
| 1377 | Good Approximation Problem | 22%(238/1065) | 2024-8-1 |
| 1328 | Radar Installation | 22%(39666/173933) | 2025-5-13 |
| 1396 | Simple Arithmetics | 23%(552/2378) | 2025-5-15 |
| 1372 | FORCAL | 23%(97/410) | 2023-3-4 |
| 1387 | The Constraint Densest Submatrix | 23%(273/1150) | 2022-12-8 |
| 1369 | Append | 24%(129/536) | 2024-7-26 |
| 1324 | Holedox Moving | 24%(5525/22338) | 2025-3-4 |
| 1393 | Fold-up Patterns | 25%(39/156) | 2025-4-27 |
| 1391 | Erdos Numbers | 25%(456/1779) | 2025-5-4 |
| 1322 | Chocolate | 26%(3506/13398) | 2024-12-7 |
| 1366 | Word | 26%(250/953) | 2024-8-12 |
| 1380 | Equipment Box | 26%(1190/4485) | 2024-11-28 |
| 1342 | Tag Trees | 26%(116/430) | 2023-2-7 |
| 1335 | Digital Onion | 26%(143/530) | 2024-7-16 |
| 1343 | Rooted Trees Isomorphism | 26%(176/652) | 2023-10-5 |
| 1333 | Christmas Gifts | 27%(64/237) | 2023-4-27 |
| 1367 | Time | 27%(188/694) | 2024-10-28 |
| 1311 | Doing Windows | 27%(131/471) | 2024-10-26 |
| 1352 | Quantity of White Mice | 28%(166/579) | 2024-9-19 |
| 1379 | Run Away | 28%(3515/12122) | 2025-4-30 |
| 1374 | Crosswords | 29%(177/592) | 2024-12-4 |
| 1375 | Intervals | 29%(1589/5313) | 2025-5-3 |
| 1350 | Cabric Number Problem | 30%(3702/12161) | 2025-5-13 |
| 1394 | Railroad | 30%(413/1351) | 2024-7-27 |
| 1385 | Lifting the Stone | 31%(1386/4455) | 2025-5-10 |
| 1308 | Is It A Tree? | 31%(17419/55733) | 2025-5-15 |
| 1386 | Play on Words | 32%(5912/18292) | 2025-5-5 |
| 1357 | Afshung Pizza Delivery | 32%(61/188) | 2024-7-29 |
| 1310 | Nonstop Travel | 32%(193/592) | 2024-9-10 |
| 1376 | Robot | 32%(3526/10700) | 2025-2-6 |
| 1381 | Secret Code | 32%(298/904) | 2024-8-18 |
| 1340 | The Longest Detour Problem | 33%(231/695) | 2022-1-25 |
| 1371 | Tin Cutter | 33%(289/864) | 2022-2-2 |
| 1304 | World's Worst Bus Schedule | 33%(310/916) | 2024-7-26 |
| 1364 | King | 34%(5852/17180) | 2025-5-8 |
| 1301 | The Umbrella Problem: 2054 | 34%(147/429) | 2024-11-11 |
| 1337 | A Lazy Worker | 34%(467/1357) | 2024-8-14 |
| 1339 | poker card game | 34%(372/1072) | 2024-8-17 |
| 1370 | Gossiping | 34%(199/572) | 2022-2-1 |
| 1382 | The Proper Key | 35%(235/669) | 2024-9-11 |
| 1359 | Spacecraft Malfunction | 35%(183/518) | 2024-8-1 |
| 1336 | The K-League | 35%(321/905) | 2025-1-12 |
| 1383 | Labyrinth | 35%(2382/6697) | 2025-2-10 |
| 1307 | Mapping the Route | 35%(243/680) | 2025-2-5 |
| 1303 | Byte Me! | 35%(125/349) | 2024-7-20 |
| 1358 | Housing Complexes | 36%(146/404) | 2024-9-23 |
| 1314 | Finding Rectangles | 37%(735/1978) | 2023-10-3 |
| 1363 | Rails | 37%(19726/52721) | 2025-5-12 |
| 1329 | Circle Through Three Points | 38%(1957/5024) | 2024-11-15 |
| 1334 | Two Mountaineers | 39%(184/468) | 2024-7-29 |
| 1397 | The Bulk | 39%(95/239) | 2024-10-28 |
| 1325 | Machine Schedule | 40%(8891/21852) | 2025-5-15 |
| 1390 | Blocks | 40%(3249/7983) | 2025-1-12 |
| 1309 | Coconuts, Revisited | 40%(924/2262) | 2024-12-1 |
| 1349 | Coding of Permutations | 41%(445/1083) | 2024-9-16 |
| 1399 | Direct Visibility | 41%(159/383) | 2024-10-17 |
| 1326 | Mileage Bank | 41%(6350/15226) | 2025-4-30 |
| 1338 | Ugly Numbers | 41%(13554/32359) | 2025-3-8 |
| 1332 | Finding Liars | 42%(719/1704) | 2024-8-2 |
| 1300 | Door Man | 42%(1783/4161) | 2025-2-23 |
| 1365 | Prime Land | 43%(2539/5778) | 2024-8-10 |
| 1321 | 棋盘问题 | 44%(60093/134549) | 2025-5-14 |
| 1378 | Power Cable Problem | 44%(190/425) | 2024-12-25 |
| 1356 | Grandpa's Other Estate | 44%(273/609) | 2024-7-31 |
| 1306 | Combinations | 44%(5792/12874) | 2025-3-16 |
| 1319 | Pipe Fitters | 45%(861/1900) | 2024-11-10 |
| 1318 | Word Amalgamation | 47%(5357/11339) | 2025-4-20 |
| 1330 | Nearest Common Ancestors | 47%(22810/47877) | 2025-5-13 |
| 1323 | Game Prediction | 47%(6214/13002) | 2025-5-4 |
| 1398 | Complete the sequence! | 48%(557/1147) | 2024-11-25 |
| 1351 | Number of Locks | 49%(855/1741) | 2025-5-2 |
| 1384 | Piggy-Bank | 49%(9769/19676) | 2025-5-15 |
| 1392 | Ouroboros Snake | 50%(812/1612) | 2024-10-29 |
| 1313 | Booklet Printing | 50%(1239/2453) | 2024-9-24 |
| 1354 | Placement of Keys | 51%(935/1832) | 2025-5-8 |
| 1389 | Area of Simple Polygons | 51%(2120/4113) | 2025-5-5 |
| 1331 | Multiply | 51%(3309/6386) | 2025-5-5 |
| 1312 | Numerically Speaking | 52%(726/1384) | 2025-5-1 |
| 1344 | Tree Size Problem | 54%(282/522) | 2022-5-29 |
| 1320 | Street Numbers | 54%(1863/3409) | 2024-9-20 |
| 1362 | Skew Binary | 54%(404/735) | 2024-7-25 |
| 1316 | Self Numbers | 55%(14912/26992) | 2025-3-8 |
| 1305 | Fermat vs. Pythagoras | 56%(1128/1999) | 2024-11-10 |
| 1327 | Moving Object Recognition | 56%(347/609) | 2024-8-11 |
| 1302 | Blue Gene, Jr. | 59%(436/736) | 2024-12-25 |
| 1317 | Do the Untwist | 59%(2265/3784) | 2025-5-5 |
| 1353 | Color Change of Go Game Pieces | 60%(356/590) | 2023-6-12 |
| 1388 | Hinge Node Problem | 61%(345/563) | 2024-9-23 |
| 1315 | Don't Get Rooked | 62%(1990/3168) | 2025-5-12 |
