| 5239 | Pseudorandom Sequence Period | 0 | 0 | 0.000% |
| 5240 | Phone Code | 0 | 0 | 0.000% |
| 5241 | A polyline | 0 | 0 | 0.000% |
| 5242 | Mysterious numbers - 2 | 0 | 0 | 0.000% |
| 5243 | ucyhf | 0 | 0 | 0.000% |
| 5244 | MYSTERIOUS LANGUAGE | 0 | 0 | 0.000% |
| 5245 | Broken checker | 0 | 0 | 0.000% |
| 5246 | A Piece of Cake | 0 | 0 | 0.000% |
| 5247 | Star | 0 | 0 | 0.000% |
| 5248 | Mysterious numbers - 1 | 0 | 0 | 0.000% |
| 5249 | Fish | 0 | 0 | 0.000% |
| 5250 | Logging | 0 | 0 | 0.000% |
| 5251 | Monitor | 0 | 0 | 0.000% |
| 5252 | Burglar and Matches | 0 | 0 | 0.000% |
| 5253 | Flag | 0 | 0 | 0.000% |
| 5254 | Replacing Digits | 0 | 0 | 0.000% |
| 5255 | Chores | 0 | 0 | 0.000% |
| 5256 | Wizards and Minimal Spell | 0 | 0 | 0.000% |
| 5257 | Wizards and Demonstration | 0 | 0 | 0.000% |
| 5258 | Wizards and Bets | 0 | 0 | 0.000% |
| 5259 | Wizards and Roads | 0 | 0 | 0.000% |
| 5260 | Wizards and Numbers | 0 | 0 | 0.000% |
| 5261 | Wizards and Huge Prize | 0 | 0 | 0.000% |
| 5262 | Wizards and Trolleybuses | 0 | 0 | 0.000% |
| 5263 | Tetrahedron | 0 | 0 | 0.000% |
| 5264 | Median | 0 | 0 | 0.000% |
| 5265 | Polygons | 0 | 0 | 0.000% |
| 5266 | Rank List | 0 | 0 | 0.000% |
| 5267 | Compatible Numbers | 0 | 0 | 0.000% |
| 5268 | Beard Graph | 0 | 0 | 0.000% |
| 5269 | Another Problem on Strings | 0 | 0 | 0.000% |
| 5270 | Burning Midnight Oil | 0 | 0 | 0.000% |
| 5271 | Supercentral Point | 0 | 0 | 0.000% |
| 5272 | Minimum Diameter | 0 | 0 | 0.000% |
| 5273 | Ancient Berland Hieroglyphs | 0 | 0 | 0.000% |
| 5274 | Variable, or There and Back Again | 0 | 0 | 0.000% |
| 5275 | e-Government | 0 | 0 | 0.000% |
| 5276 | Substring and Subsequence | 0 | 0 | 0.000% |
| 5277 | Polycarpus the Safecracker | 0 | 0 | 0.000% |
| 5278 | Distance in Tree | 0 | 0 | 0.000% |
| 5279 | Abracadabra | 0 | 0 | 0.000% |
| 5280 | Dress'em in Vests! | 0 | 0 | 0.000% |
| 5281 | Buses and People | 0 | 0 | 0.000% |
| 5282 | Edges in MST | 0 | 0 | 0.000% |
| 5283 | Find Pair | 0 | 0 | 0.000% |
| 5284 | Unlucky Ticket | 0 | 0 | 0.000% |
| 5285 | Twins | 0 | 0 | 0.000% |
| 5286 | Map | 0 | 0 | 0.000% |
| 5287 | Industrial Nim | 0 | 0 | 0.000% |
| 5288 | Laser | 0 | 0 | 0.000% |