| 309897 | CF1754C2. Make Nonzero Sum (hard version) | 0 | 0 | 0.000% |
| 309933 | CF1761F2. Anti-median (Hard Version) | 0 | 0 | 0.000% |
| 309956 | CF1764G3. Doremy's Perfect DS Class (Hard Version) | 0 | 0 | 0.000% |
| 310037 | CF1774F2. Magician and Pigs (Hard Version) | 0 | 0 | 0.000% |
| 310041 | CF1775A2. Gardener and the Capybaras (hard version) | 0 | 0 | 0.000% |
| 310095 | CF1781H2. Window Signals (hard version) | 0 | 0 | 0.000% |
| 310104 | CF1782H2. Window Signals (hard version) | 0 | 0 | 0.000% |
| 310114 | CF1784C. Monsters (hard version) | 0 | 0 | 0.000% |
| 310120 | CF1785C. Monsters (hard version) | 0 | 0 | 0.000% |
| 310125 | CF1786A2. Alternating Deck (hard version) | 0 | 0 | 0.000% |
| 310129 | CF1786E. Monsters (hard version) | 0 | 0 | 0.000% |
| 310166 | CF1791G2. Teleporters (Hard Version) | 0 | 0 | 0.000% |
| 310173 | CF1792F2. Graph Coloring (hard version) | 0 | 0 | 0.000% |
| 310202 | CF1799D2. Hot Start Up (hard version) | 0 | 0 | 0.000% |
| 310210 | CF1800C2. Powering the Hero (hard version) | 0 | 0 | 0.000% |
| 310213 | CF1800E2. Unforgivable Curse (hard version) | 0 | 0 | 0.000% |
| 310256 | CF1805F2. Survival of the Weakest (hard version) | 0 | 0 | 0.000% |
| 310263 | CF1806F2. GCD Master (hard version) | 0 | 0 | 0.000% |
| 310271 | CF1807G2. Subsequence Addition (Hard Version) | 0 | 0 | 0.000% |
| 310278 | CF1808E3. Minibuses on Venus (hard version) | 0 | 0 | 0.000% |
| 310301 | CF1811G2. Vlad and the Nice Paths (hard version) | 0 | 1 | 0.000% |
| 400194 | GYM100090 L Hard Problem | 0 | 0 | 0.000% |
| 400331 | GYM100142 A The Very Hard One | 0 | 0 | 0.000% |
| 400947 | GYM100287 H Hard Life | 0 | 0 | 0.000% |
| 401090 | GYM100342 H Hard Test | 0 | 0 | 0.000% |
| 401211 | GYM100379 C Fibonacci number’s ratio (the hard version) | 0 | 0 | 0.000% |
| 401464 | GYM100460 J Shards of the Past | 0 | 0 | 0.000% |
| 401564 | GYM100494 H Hard Evidence | 0 | 0 | 0.000% |
| 401814 | GYM100532 H Hard Life | 0 | 0 | 0.000% |
| 402374 | GYM100739 H Hard Molecules | 0 | 0 | 0.000% |
| 402863 | GYM100923 G Por Costel and the Orchard | 0 | 0 | 0.000% |
| 403371 | GYM101142 H Hard Cuts | 0 | 0 | 0.000% |
| 403410 | GYM101150 K2 Fair Warning (Hard) | 0 | 0 | 0.000% |
| 403412 | GYM101150 L2 Theme Park (Hard) | 0 | 0 | 0.000% |
| 403511 | GYM101189 A Arpa’s hard exam and Mehrdad’s naive cheat(Hard) | 0 | 0 | 0.000% |
| 403512 | GYM101189 B Arpa’s obvious problem and Mehrdad’s terrible solution(Hard) | 0 | 0 | 0.000% |
| 403513 | GYM101189 C Arpa's loud Owf and Mehrdad's evil plan(Hard) | 0 | 0 | 0.000% |
| 403514 | GYM101189 D Arpa’s letter-marked tree and Mehrdad’s Dokhtar-kosh paths(Hard) | 0 | 0 | 0.000% |
| 403522 | GYM101190 H Hard Refactoring | 0 | 0 | 0.000% |
| 403556 | GYM101193 G Hard exam | 0 | 0 | 0.000% |
| 403559 | GYM101193 J Cherry orchard | 0 | 0 | 0.000% |
| 403837 | GYM101334 H Hardwood Cutting | 0 | 0 | 0.000% |
| 404216 | GYM101463 B Hard-working Student | 0 | 0 | 0.000% |
| 404409 | GYM101502 A A Very Hard Question | 0 | 0 | 0.000% |
| 404450 | GYM101505 G Orchard Division | 0 | 0 | 0.000% |
| 405146 | GYM101806 X Xtreme NP-hard Problem?! | 0 | 0 | 0.000% |
| 405232 | GYM101853 G Hard Equation | 0 | 0 | 0.000% |
| 405325 | GYM101889 H Hard choice | 0 | 0 | 0.000% |
| 405422 | GYM101955 G Best ACMer Solves the Hardest Problem | 0 | 0 | 0.000% |
| 405667 | GYM102028 H Can You Solve the Harder Problem? | 0 | 0 | 0.000% |
| 405980 | GYM102201 H Hard To Explain | 0 | 0 | 0.000% |
| 406100 | GYM102267 E Robots Hard | 0 | 0 | 0.000% |
| 406123 | GYM102271 B The Cybermen Moonbase (Hard) | 0 | 0 | 0.000% |
| 406194 | GYM102307 H Hardest Challenge | 0 | 0 | 0.000% |
| 406411 | GYM102397 E Bashar and the bad land (Hard) | 0 | 0 | 0.000% |
| 406677 | GYM102483 H Hard Drive | 0 | 0 | 0.000% |
| 406870 | GYM102586 J Median Replace Hard | 0 | 0 | 0.000% |
| 406983 | GYM102646 A2 Product of Triples (Hard Version) | 0 | 0 | 0.000% |
| 407070 | GYM102697 041 World Cup (Harder Version) | 0 | 0 | 0.000% |
| 407071 | GYM102697 042 Number Code (Harder Version) | 0 | 0 | 0.000% |
| 407157 | GYM102697 128 What the Frac (Harder Version) | 0 | 0 | 0.000% |
| 407204 | GYM102697 175 Counting Calories (Harder Version) | 0 | 0 | 0.000% |
| 407333 | GYM102766 G Singhal and Broken Keyboard (hard version) | 0 | 0 | 0.000% |
| 407788 | GYM102893 H Hard Work | 0 | 0 | 0.000% |
| 407817 | GYM102897 D Palindrome Hard Problem | 0 | 0 | 0.000% |
| 407826 | GYM102897 M XCPCIO Board CLI Hard | 0 | 0 | 0.000% |
| 408059 | GYM102968 I Orchards | 0 | 0 | 0.000% |
| 408322 | GYM103092 H Hard Life | 0 | 0 | 0.000% |
| 408388 | GYM103110 D Apple Orchard | 0 | 0 | 0.000% |
| 408531 | GYM103181 L Hard work | 0 | 0 | 0.000% |
| 408641 | GYM103241 P Abc's (Hard Version) | 0 | 0 | 0.000% |
| 408644 | GYM103241 S Cooked Fish (Hard Version) | 0 | 0 | 0.000% |
| 408656 | GYM103256 E2 Coins Game (hard version) | 0 | 0 | 0.000% |
| 408904 | GYM103373 H A Hard Problem | 0 | 0 | 0.000% |
| 408975 | GYM103401 D Hard Nim | 0 | 0 | 0.000% |
| 409238 | GYM103466 A A Hard Problem | 0 | 0 | 0.000% |
| 409612 | GYM103643 O Painting Fences (Hard Version) | 0 | 0 | 0.000% |
| 409658 | GYM103660 K Substring Inversion (Hard Version) | 0 | 0 | 0.000% |
| 409749 | GYM103729 C Potion(hard version) | 0 | 0 | 0.000% |
| 409874 | GYM103821 F A + B (Harder version) | 0 | 0 | 0.000% |
| 409887 | GYM103824 F 折磨王(hard version) | 0 | 0 | 0.000% |
| 409889 | GYM103828 B Too simple for a hard problem? | 0 | 0 | 0.000% |
| 409973 | GYM103870 R Rock Paper Scissors (Hard Version) | 0 | 0 | 0.000% |
| 410069 | GYM103937 D Hardcore Haircuts | 0 | 0 | 0.000% |
| 410076 | GYM103938 D Hardcore Haircuts | 0 | 0 | 0.000% |
| 410228 | GYM103987 D Hard Tasks | 0 | 0 | 0.000% |
| 410267 | GYM103994 I Make Nonzero Sum (hard version) | 0 | 0 | 0.000% |
| 410587 | GYM104059 H Hardcore Hangman | 0 | 0 | 0.000% |
| 410612 | GYM104065 H Life is Hard and Undecidable, but... | 0 | 0 | 0.000% |
| 410961 | GYM104168 D2 Nested Sum (Hard Version) | 0 | 0 | 0.000% |