| 5312 | BZOJ1312：Neerc2006 Hard Life | 0 | 0 | 0.000% |
| 7069 | BZOJ3069：[Pa2011]Hard Choice 艰难的选择 | 0 | 0 | 0.000% |
| 7805 | BZOJ3805：Hardwood Cutting | 0 | 0 | 0.000% |
| 8589 | BZOJ4589：Hard Nim | 0 | 0 | 0.000% |
| 8846 | BZOJ4846：[neerc2016]Hard Refactoring | 0 | 0 | 0.000% |
| 8878 | BZOJ4878：[Lydsy2017年5月月赛]挑战NP-Hard | 0 | 0 | 0.000% |
| 101624 | [AtCoder]ABC162 E - Sum of gcd of Tuples (Hard) | 0 | 0 | 0.000% |
| 102291 | [AtCoder]ABC229 B - Hard Calculation | 0 | 0 | 0.000% |
| 102533 | [AtCoder]ABC253 D - FizzBuzz Sum Hard | 0 | 0 | 0.000% |
| 103206 | [Atcoder]ABC320 G - Slot Strategy 2 (Hard) | 0 | 0 | 0.000% |
| 103280 | [Atcoder]ABC328 A - Not Too Hard | 0 | 7 | 0.000% |
| 200662 | [AtCoder]ARC066 E - Addition and Subtraction Hard | 0 | 1 | 0.000% |
| 200663 | [AtCoder]ARC066 F - Contest with Drinks Hard | 0 | 0 | 0.000% |
| 200993 | [AtCoder]ARC099 F - Eating Symbols Hard | 0 | 0 | 0.000% |
| 300316 | CF61B. Hard Work | 0 | 0 | 0.000% |
| 300939 | CF178A1. Educational Game | 0 | 0 | 0.000% |
| 300940 | CF178A2. Educational Game | 0 | 0 | 0.000% |
| 300941 | CF178A3. Educational Game | 0 | 0 | 0.000% |
| 300942 | CF178B1. Greedy Merchants | 0 | 0 | 0.000% |
| 300943 | CF178B2. Greedy Merchants | 0 | 0 | 0.000% |
| 300944 | CF178B3. Greedy Merchants | 0 | 0 | 0.000% |
| 300945 | CF178C1. Smart Beaver and Resolving Collisions | 0 | 0 | 0.000% |
| 300946 | CF178C2. Smart Beaver and Resolving Collisions | 0 | 0 | 0.000% |
| 300947 | CF178C3. Smart Beaver and Resolving Collisions | 0 | 0 | 0.000% |
| 300948 | CF178D1. Magic Squares | 0 | 0 | 0.000% |
| 300949 | CF178D2. Magic Squares | 0 | 0 | 0.000% |
| 300950 | CF178D3. Magic Squares | 0 | 0 | 0.000% |
| 300951 | CF178E1. The Beaver's Problem - 2 | 0 | 0 | 0.000% |
| 300952 | CF178E2. The Beaver's Problem - 2 | 0 | 0 | 0.000% |
| 300953 | CF178E3. The Beaver's Problem - 2 | 0 | 0 | 0.000% |
| 300954 | CF178F1. Representative Sampling | 0 | 0 | 0.000% |
| 300955 | CF178F2. Representative Sampling | 0 | 0 | 0.000% |
| 300956 | CF178F3. Representative Sampling | 0 | 0 | 0.000% |
| 303405 | CF660C. Hard Process | 0 | 0 | 0.000% |
| 303551 | CF687A. NP-Hard Problem | 0 | 0 | 0.000% |
| 303558 | CF688C. NP-Hard Problem | 0 | 0 | 0.000% |
| 303568 | CF690A3. Collective Mindsets (hard) | 0 | 0 | 0.000% |
| 303571 | CF690B3. Recover Polygon (hard) | 0 | 0 | 0.000% |
| 303574 | CF690C3. Brain Network (hard) | 0 | 0 | 0.000% |
| 303577 | CF690D3. The Wall (hard) | 0 | 0 | 0.000% |
| 303582 | CF690F3. Tree of Life (hard) | 0 | 0 | 0.000% |
| 303654 | CF706C. Hard problem | 0 | 0 | 0.000% |
| 303847 | CF742A. Arpa’s hard exam and Mehrdad’s naive cheat | 0 | 0 | 0.000% |
| 303909 | CF753C. Interactive Bulls and Cows (Hard) | 0 | 0 | 0.000% |
| 304190 | CF802C. Heidi and Library (hard) | 0 | 0 | 0.000% |
| 304193 | CF802F. Marmots (hard) | 0 | 0 | 0.000% |
| 304196 | CF802I. Fake News (hard) | 0 | 0 | 0.000% |
| 304199 | CF802L. Send the Fool Further! (hard) | 0 | 0 | 0.000% |
| 304202 | CF802O. April Fools' Problem (hard) | 0 | 0 | 0.000% |
| 305046 | CF958A3. Death Stars (hard) | 0 | 0 | 0.000% |
| 305051 | CF958C3. Encryption (hard) | 0 | 0 | 0.000% |
| 305053 | CF958D2. Hyperspace Jump (hard) | 0 | 0 | 0.000% |
| 305056 | CF958E3. Guard Duty (hard) | 0 | 0 | 0.000% |
| 305059 | CF958F3. Lightsabers (hard) | 0 | 0 | 0.000% |
| 305365 | CF1015E2. Stars Drawing (Hard Edition) | 0 | 0 | 0.000% |
| 305506 | CF1043E. Train Hard, Win Easy | 0 | 0 | 0.000% |
| 305703 | CF1077F2. Pictures with Kittens (hard version) | 0 | 19 | 0.000% |
| 305907 | CF1108E2. Array and Segments (Hard version) | 0 | 0 | 0.000% |
| 305978 | CF1118D2. Coffee and Coursework (Hard Version) | 0 | 0 | 0.000% |
| 305981 | CF1118F2. Tree Cutting (Hard Version) | 0 | 0 | 0.000% |
| 306071 | CF1141F2. Same Sum Blocks (Hard) | 0 | 9 | 0.000% |
| 306172 | CF1157C2. Increasing Subsequence (hard version) | 0 | 0 | 0.000% |
| 306204 | CF1163B2. Cat Party (Hard Edition) | 0 | 0 | 0.000% |
| 306206 | CF1163C2. Power Transmission (Hard Edition) | 0 | 0 | 0.000% |
| 306237 | CF1165F2. Microtransactions (hard version) | 0 | 0 | 0.000% |
| 306279 | CF1172C2. Nauuo and Pictures (hard version) | 0 | 0 | 0.000% |
| 306288 | CF1173E2. Nauuo and Pictures (hard version) | 0 | 0 | 0.000% |
| 306310 | CF1177B. Digits Sequence (Hard Edition) | 0 | 0 | 0.000% |
| 306335 | CF1181E2. A Story of One Country (Hard) | 0 | 0 | 0.000% |
| 306348 | CF1183G. Candy Box (hard version) | 0 | 0 | 0.000% |
| 306349 | CF1183H. Subsequences (hard version) | 0 | 0 | 0.000% |
| 306352 | CF1184A3. Heidi Learns Hashing (Hard) | 0 | 0 | 0.000% |
| 306355 | CF1184B3. The Doctor Meets Vader (Hard) | 0 | 0 | 0.000% |
| 306358 | CF1184C3. Heidi and the Turing Test (Hard) | 0 | 0 | 0.000% |
| 306360 | CF1184D2. Parallel Universes (Hard) | 0 | 0 | 0.000% |
| 306363 | CF1184E3. Daleks' Invasion (hard) | 0 | 0 | 0.000% |
| 306367 | CF1185C2. Exam in BerSU (hard version) | 0 | 0 | 0.000% |
| 306372 | CF1185G2. Playlist for Polycarp (hard version) | 0 | 0 | 0.000% |
| 306427 | CF1195D2. Submarine in the Rybinsk Sea (hard edition) | 0 | 0 | 0.000% |
| 306434 | CF1196D2. RGB Substring (hard version) | 0 | 0 | 0.000% |
| 306466 | CF1201E2. Knightmare (hard) | 0 | 0 | 0.000% |
| 306477 | CF1203D2. Remove the Substring (hard version) | 0 | 2 | 0.000% |
| 306480 | CF1203F2. Complete the Projects (hard version) | 0 | 0 | 0.000% |
| 306485 | CF1204D2. Kirk and a Binary String (hard version) | 0 | 0 | 0.000% |
| 306519 | CF1209E2. Rotate Columns (hard version) | 0 | 0 | 0.000% |
| 306522 | CF1209G2. Into Blocks (hard version) | 0 | 0 | 0.000% |
| 306530 | CF1210F2. Marek and Matching (hard version) | 0 | 0 | 0.000% |
| 306553 | CF1213D2. Equalizing by Division (hard version) | 0 | 0 | 0.000% |
| 306576 | CF1216E2. Numerical Sequence (hard version) | 0 | 0 | 0.000% |
| 306625 | CF1225B2. TV Subscriptions (Hard Version) | 0 | 0 | 0.000% |
| 306635 | CF1227D2. Optimal Subsequences (Hard Version) | 0 | 0 | 0.000% |
| 306638 | CF1227F2. Wrong Answer on test 233 (Hard Version) | 0 | 0 | 0.000% |
| 306651 | CF1229E2. Marek and Matching (hard version) | 0 | 0 | 0.000% |
| 306668 | CF1234B2. Social Network (hard version) | 0 | 0 | 0.000% |
| 306685 | CF1237C2. Balanced Removals (Harder) | 0 | 0 | 0.000% |
| 306699 | CF1239B. The World Is Just a Programming Task (Hard Version) | 0 | 0 | 0.000% |
| 306723 | CF1243B2. Character Swap (Hard Version) | 0 | 0 | 0.000% |
| 306748 | CF1247B2. TV Subscriptions (Hard Version) | 0 | 0 | 0.000% |
| 306757 | CF1248D2. The World Is Just a Programming Task (Hard Version) | 0 | 0 | 0.000% |
| 306762 | CF1249B2. Books Exchange (hard version) | 0 | 5 | 0.000% |