2021/README.md

# Advent of Code 2021

| Day | CHICKEN | Scala  | Python | Nim |
|-----|---------|--------|--------|-----|
| 1   | ✅      |        |        |     |
| 2   | ✅      |        |        |     |
| 3   | part 1  | part 1 | ✅     |     |
| 4   |         |        | ✅     |     |
| 5   |         |        | ✅     |     |
| 6   |         |        |        | ✅  |
| 7   | ✅      |        |        |     |