1. Memorizing a poem
2. Drawing a still-life painting
3. Solving a Rubik's cube
Drawing a still life painting, solving a Rubik's cube, memorizing a poem.
### Instruction:
Rank the following activities based on their level of difficulty, from easiest to hardest.

### Input:
Drawing a still life painting, solving a Rubik's cube, memorizing a poem.

### Response:
