| 1 | Traps | constructive algorithms, greedy, sortings | 8810 | Approved |
| 2 | Count The Blocks | combinatorics, dp, math | 8226 | Approved |
| 3 | MEX and Increments | constructive algorithms, data structures, dp, greedy, implementation, math, sortings | 8097 | Approved |
| 4 | Slime | dp, greedy, implementation | 7872 | Approved |
| 5 | Task On The Board | constructive algorithms, greedy, implementation, sortings | 7755 | Approved |
| 6 | Replace the Numbers | constructive algorithms, data structures, dsu, implementation | 7215 | Approved |
| 7 | A/B Matrix | constructive algorithms, greedy, math | 7169 | Approved |
| 8 | Yet Another Monster Killing Problem | binary search, data structures, dp, greedy, sortings, two pointers | 7017 | Approved |
| 9 | Rock, Paper, Scissors | brute force, constructive algorithms, flows, greedy, math | 6934 | Approved |
| 10 | Boris and His Amazing Haircut | constructive algorithms, data structures, dp, dsu, greedy, sortings | 6904 | Approved |
| 11 | String Coloring (easy version) | constructive algorithms, dp, graphs, greedy, sortings | 6763 | Approved |
| 12 | Array Painting | constructive algorithms, greedy, two pointers | 6747 | Approved |
| 13 | Zookeeper and The Infinite Zoo | bitmasks, constructive algorithms, dp, greedy, math | 6563 | Approved |
| 14 | K-periodic Garland | brute force, dp, greedy | 6537 | Approved |
| 15 | Climbing the Tree | binary search, math | 6480 | Approved |
| 16 | Climbing the Tree | binary search, math | 6472 | Approved |
| 17 | Gambling | data structures, dp, greedy, math | 6392 | Approved |
| 18 | New Year and the Permutation Concatenation | combinatorics, dp, math | 6370 | Approved |
| 19 | Beautiful Array | brute force, data structures, divide and conquer, dp, greedy | 6361 | Approved |
| 20 | Tree with Maximum Cost | dfs and similar, dp, trees | 6311 | Approved |
| 21 | Extra Element | implementation, math | 6277 | Approved |
| 22 | Lucky Permutation | constructive algorithms, dfs and similar, graphs, greedy | 6126 | Approved |
| 23 | Superhero Battle | math | 6060 | Approved |
| 24 | Three Bags | constructive algorithms, greedy | 6020 | Approved |
| 25 | Relatively Prime Graph | brute force, constructive algorithms, graphs, greedy, math | 6013 | Approved |
