Sessão: Condicionais (IF, ELSE / SE, SENÃO)

- [x] Lista 1
- [x] Lista 2
- [ ] Lista 3

The issue only identifies Lista 3; it does not mention a file, test, entry point, or what the exercise should contain. Inspect the repository structure and compare the completed Lista 1 and Lista 2 to determine where Lista 3 belongs and what completion means. Confirm the expected work before changing the checklist.

由索引模型根據 Issue 內容生成。