| 1 | Paper-cutting |
| 2 | Flippy Sequence |
| 3 | Mirror |
| 4 | Baby's First Suffix Array Problem |
| 5 | Monster Hunter |
| 6 | Swapping Operation |
| 7 | Digit Mode |
| 8 | Final Defense Line |
| 9 | Connected Intervals |
| 10 | Heap Partition |
| 11 | Domino Tiling |
| 12 | Chiaki Sequence |
| 13 | Array |
| 14 | Chiaki Chain |
| 15 | Inner Product |
| 16 | Three Dimensions |
| 17 | Alice's Sequence |
| 18 | Bomb |
| 19 | Clique |
| 20 | Deque and Balls |
| 21 | Easy When You Know How |
| 22 | Four |
| 23 | Prefix Suffix |
| 24 | Triple |
| 25 | Circular Sectors |
| 26 | Almost Bobo Number |
| 27 | Power of Power Partition Function |
| 28 | Rectangles Inside Rectangle |
| 29 | Order-Preserving Partition |
| 30 | Prime Tree |
| 31 | Hamiltonian $k$-vertex-connected Graph |
| 32 | Triangle Tiling |
| 33 | Balanced Binary String |
| 34 | Digital Root |
| 35 | Ternary String Revolution |
| 36 | Chiaki Chain Counting |
| 37 | Stone Game |
| 38 | Fraction Reduction |
| 39 | Suffix Structure |
| 40 | I Just Want... One More... |
| 41 | Gifts from Knowledge |
| 42 | Basic Substring Structure |
