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# Advent of Code 2020 in Gleam
| Day | Problem Name | Part 1 | Part 2 | Practiced Concepts |
| :----: | --------------------------------------------------------------- | :----: | :----: | -------------------------------------------------------------------------- |
| **01** | [Report Repair](https://adventofcode.com/2020/day/1) | :star: | :star: | stdlib, file reading, `\|>`, `gleam/io` |
| **02** | [Password Philosophy](https://adventofcode.com/2020/day/2) | :star: | :star: | parsing, higher-order functions, structures |
| **03** | [Toboggan Trajectory](https://adventofcode.com/2020/day/3) | :star: | :star: | 2D vectors, uniform motion, grids |
| **04** | [Passport Processing](https://adventofcode.com/2020/day/4) | :star: | :star: | parsing |
| **05** | [Binary Boarding](https://adventofcode.com/2020/day/5) | :star: | :star: | binary numbers, `gleam/iterator`, `gleam/set` |
| **06** | [Custom Customs](https://adventofcode.com/2020/day/6) | :star: | :star: | type aliases, parsing, `gleam/list`, `gleam/set` |
| **07** | [Handy Haversacks](https://adventofcode.com/2020/day/7) | :star: | :star: | parsing, graphs, recursion, `gleam/dict`, `gleam/iterator` |
| **08** | [Handheld Halting](https://adventofcode.com/2020/day/8) | :star: | :star: | ADTs, parsing, pattern matching, interpreters, `gleam/option` |
| **09** | [Encoding Error](https://adventofcode.com/2020/day/9) | :star: | :star: | `gleam/list`, `gleam/pair`, two-sum |
| **10** | [Adapter Array](https://adventofcode.com/2020/day/10) | :star: | :star: | dynamic programming, memoization, OTP, actors, `use <-` |
| **11** | [Seating System](https://adventofcode.com/2020/day/11) | :star: | :star: | grids, `gleam/iterator`, pattern matching, 2D vectors, ADTs |
| **12** | [Rain Risk](https://adventofcode.com/2020/day/12) | :star: | :star: | ADTs, state machines, pattern matching, interpreters |
| **13** | [Shuttle Search](https://adventofcode.com/2020/day/13) | :star: | :star: | scheduling, LCD, GCD, `gleam/iterator` |
| **14** | [Docking Data](https://adventofcode.com/2020/day/14) | :star: | :star: | ADTs, state machines, parsing, pattern matching, interpreters, graphs, DFS |
| **15** | [Rambunctious Recitation](https://adventofcode.com/2020/day/15) | :star: | :star: | `gleam/dict`, `gleam/iterator`, simulation |
| **16** | [Ticket Translation](https://adventofcode.com/2020/day/16) | :star: | :star: | parsing, ranges, ADTs, recursion |
| **17** | [Conway Cubes](https://adventofcode.com/2020/day/17) | :star: | :star: | `gleam/set`, 3D vectors, 4D vectors, grids, recursion |
| **18** | [Operation Order](https://adventofcode.com/2020/day/18) | :star: | :star: | ADTs, ASTs, recursive-descent parsers |
| **19** | [Monster Messages](https://adventofcode.com/2020/day/19) | :star: | :star: | parsing, ADTs, CSP, references |
| **20** | [Jurassic Jigsaw](https://adventofcode.com/2020/day/20) | :star: | :star: | grids, 2D vectors, transforms, CSP, `gleam/dict` |
| **21** | [Allergen Assessment](https://adventofcode.com/2020/day/21) | :star: | :star: | parsing, CSP, recursion |
| **22** | [Crab Combat](https://adventofcode.com/2020/day/22) | :star: | :star: | simulation, recursion, `gleam/option`, `gleam/order`, `use <-` |
| **23** | [Crab Cups](https://adventofcode.com/2020/day/23) | :star: | :star: | cyclic buffers, recursion, `gleam/dict`, `gleam/iterator` |
| **24** | [Lobby Layout](https://adventofcode.com/2020/day/24) | :star: | :star: | parsing, hexagonal coordinates, simulation, game of life |
| **25** | [Combo Breaker](https://adventofcode.com/2020/day/25) | :star: | :star: | modular arithmetic, key exchange |
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