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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 |
| 1346 | Board of Directors Meeting | 13%(19/140) | Dec 1, 2025 |
| 1393 | Fold-up Patterns | 24%(39/158) | Dec 9, 2025 |
| 1345 | Address Recovery | 4%(8/166) | Jan 8, 2026 |
| 1357 | Afshung Pizza Delivery | 32%(62/191) | Dec 9, 2025 |
| 1361 | JaWs | 15%(31/205) | Dec 1, 2025 |
| 1397 | The Bulk | 39%(95/242) | Dec 9, 2025 |
| 1333 | Christmas Gifts | 26%(64/242) | Jan 7, 2026 |
| 1360 | Blue x Red = Bang | 9%(29/314) | Dec 9, 2025 |
| 1303 | Byte Me! | 35%(125/355) | Jan 7, 2026 |
| 1399 | Direct Visibility | 41%(160/385) | Nov 21, 2025 |
| 1358 | Housing Complexes | 36%(149/408) | Jan 7, 2026 |
| 1372 | FORCAL | 23%(97/413) | Dec 1, 2025 |
| 1347 | Triangle | 18%(77/417) | Dec 9, 2025 |
| 1378 | Power Cable Problem | 44%(192/427) | Nov 21, 2025 |
| 1301 | The Umbrella Problem: 2054 | 34%(149/434) | Jan 8, 2026 |
| 1342 | Tag Trees | 26%(116/438) | Dec 9, 2025 |
| 1334 | Two Mountaineers | 39%(184/471) | Dec 9, 2025 |
| 1311 | Doing Windows | 27%(132/475) | Dec 9, 2025 |
| 1359 | Spacecraft Malfunction | 35%(188/525) | Jan 8, 2026 |
| 1344 | Tree Size Problem | 53%(282/526) | Dec 1, 2025 |
| 1335 | Digital Onion | 26%(144/541) | Dec 9, 2025 |
| 1369 | Append | 23%(129/542) | Jan 7, 2026 |
| 1388 | Hinge Node Problem | 61%(347/565) | Nov 20, 2025 |
| 1370 | Gossiping | 34%(199/580) | Dec 1, 2025 |
| 1352 | Quantity of White Mice | 28%(167/582) | Dec 9, 2025 |
| 1374 | Crosswords | 29%(177/594) | Dec 9, 2025 |
| 1310 | Nonstop Travel | 32%(194/595) | Nov 20, 2025 |
| 1353 | Color Change of Go Game Pieces | 60%(361/596) | Nov 20, 2025 |
| 1356 | Grandpa's Other Estate | 45%(276/612) | Nov 21, 2025 |
| 1327 | Moving Object Recognition | 57%(350/614) | Dec 9, 2025 |
| 1343 | Rooted Trees Isomorphism | 27%(180/656) | Nov 21, 2025 |
| 1382 | The Proper Key | 34%(235/673) | Dec 9, 2025 |
| 1307 | Mapping the Route | 35%(243/688) | Dec 9, 2025 |
| 1367 | Time | 27%(190/697) | Nov 21, 2025 |
| 1340 | The Longest Detour Problem | 33%(231/698) | Dec 9, 2025 |
| 1302 | Blue Gene, Jr. | 59%(438/740) | Nov 17, 2025 |
| 1362 | Skew Binary | 54%(404/747) | Jan 8, 2026 |
| 1368 | Puzzle | 19%(157/795) | Dec 9, 2025 |
| 1341 | The Strongest Subchains | 22%(181/822) | Dec 9, 2025 |
| 1371 | Tin Cutter | 33%(290/870) | Dec 9, 2025 |
| 1381 | Secret Code | 32%(298/909) | Jan 8, 2026 |
| 1336 | The K-League | 35%(322/913) | Jan 8, 2026 |
| 1304 | World's Worst Bus Schedule | 33%(313/925) | Jan 8, 2026 |
| 1366 | Word | 26%(254/961) | Jan 8, 2026 |
| 1377 | Good Approximation Problem | 22%(242/1069) | Jan 8, 2026 |
| 1339 | poker card game | 34%(373/1074) | Nov 20, 2025 |
| 1349 | Coding of Permutations | 40%(445/1086) | Dec 9, 2025 |
| 1387 | The Constraint Densest Submatrix | 23%(276/1153) | Dec 9, 2025 |
| 1398 | Complete the sequence! | 48%(561/1156) | Oct 14, 2025 |
| 1355 | Selecting the Optimal Teaching Fiends | 14%(170/1183) | Dec 9, 2025 |
| 1373 | L-system | 12%(152/1190) | Jan 8, 2026 |
| 1394 | Railroad | 30%(413/1355) | Jan 8, 2026 |
| 1337 | A Lazy Worker | 34%(471/1365) | Dec 9, 2025 |
| 1312 | Numerically Speaking | 52%(727/1398) | Oct 14, 2025 |
| 1392 | Ouroboros Snake | 49%(820/1641) | Nov 19, 2025 |
| 1332 | Finding Liars | 42%(720/1708) | Dec 9, 2025 |
| 1351 | Number of Locks | 49%(856/1743) | Oct 14, 2025 |
| 1391 | Erdos Numbers | 25%(458/1782) | Dec 9, 2025 |
| 1354 | Placement of Keys | 50%(936/1836) | Jan 7, 2026 |
| 1319 | Pipe Fitters | 45%(861/1901) | Oct 14, 2025 |
| 1348 | Computing | 15%(309/1936) | Jan 8, 2026 |
| 1314 | Finding Rectangles | 37%(735/1981) | Oct 14, 2025 |
| 1305 | Fermat vs. Pythagoras | 56%(1134/2020) | Jan 8, 2026 |
| 1309 | Coconuts, Revisited | 40%(927/2265) | Jan 7, 2026 |
| 1395 | Cog-Wheels | 12%(285/2355) | Dec 9, 2025 |
| 1396 | Simple Arithmetics | 23%(554/2382) | Oct 14, 2025 |
| 1313 | Booklet Printing | 50%(1242/2456) | Jan 8, 2026 |
| 1315 | Don't Get Rooked | 62%(1998/3184) | Dec 21, 2025 |
| 1320 | Street Numbers | 54%(1866/3412) | Oct 19, 2025 |
| 1317 | Do the Untwist | 59%(2267/3786) | Oct 14, 2025 |
| 1389 | Area of Simple Polygons | 51%(2123/4121) | Jan 8, 2026 |
| 1300 | Door Man | 42%(1788/4171) | Jan 8, 2026 |
| 1385 | Lifting the Stone | 31%(1391/4481) | Jan 7, 2026 |
| 1380 | Equipment Box | 26%(1193/4504) | Jan 8, 2026 |
| 1329 | Circle Through Three Points | 38%(1962/5050) | Jan 8, 2026 |
| 1375 | Intervals | 29%(1592/5322) | Oct 23, 2025 |
| 1365 | Prime Land | 43%(2546/5798) | Dec 21, 2025 |
| 1331 | Multiply | 51%(3315/6399) | Jan 7, 2026 |
| 1383 | Labyrinth | 35%(2384/6709) | Jan 8, 2026 |
| 1390 | Blocks | 40%(3253/8001) | Nov 13, 2025 |
| 1376 | Robot | 32%(3528/10706) | Jan 6, 2026 |
| 1318 | Word Amalgamation | 47%(5360/11344) | Jan 8, 2026 |
| 1379 | Run Away | 29%(3538/12178) | Dec 15, 2025 |
| 1350 | Cabric Number Problem | 30%(3704/12179) | Oct 22, 2025 |
| 1306 | Combinations | 44%(5794/12878) | Jan 8, 2026 |
| 1323 | Game Prediction | 47%(6218/13009) | Jan 8, 2026 |
| 1322 | Chocolate | 26%(3513/13451) | Jan 7, 2026 |
| 1326 | Mileage Bank | 41%(6353/15229) | Jan 8, 2026 |
| 1364 | King | 34%(5856/17195) | Jan 8, 2026 |
| 1386 | Play on Words | 32%(5917/18331) | Nov 16, 2025 |
| 1384 | Piggy-Bank | 50%(10009/20015) | Jan 7, 2026 |
| 1325 | Machine Schedule | 40%(8958/21977) | Jan 7, 2026 |
| 1324 | Holedox Moving | 24%(5529/22360) | Nov 12, 2025 |
| 1316 | Self Numbers | 55%(14915/26995) | Dec 10, 2025 |
| 1338 | Ugly Numbers | 41%(13598/32513) | Jan 10, 2026 |
| 1330 | Nearest Common Ancestors | 47%(22883/48079) | Jan 10, 2026 |
| 1363 | Rails | 37%(19918/53509) | Dec 18, 2025 |
| 1308 | Is It A Tree? | 31%(17462/55951) | Jan 5, 2026 |
| 1321 | 棋盘问题 | 44%(60606/135475) | Jan 11, 2026 |
| 1328 | Radar Installation | 22%(39914/174840) | Jan 8, 2026 |
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