using only vim neovim to solve advent of code episode 2

certainly! advent of code is an annual coding challenge that features a series of programming puzzles that can be solved using a variety of programming languages. in this tutorial, we'll solve the second puzzle of advent of code using neovim, a modern version of vim, along with some useful commands and features of the editor.

requirements

2. **programming language**: for this example, we will use python, but you can use any programming language you prefer (like javascript, ruby, etc.).

setting up neovim

1. **open neovim**: launch neovim by typing `nvim` in your terminal.
2. **create a new file**: you can create a new file for your advent of code solution. for example, to create a python file:

```bash
```

3. **basic neovim commands**:
- enter insert mode: press `i`
- save the file: press `esc` then type `:w`
- quit neovim: press `esc` then type `:q`
- run a command in the terminal: press `esc` and type `:!` followed by your command.

understanding the problem

for the purposes of this tutorial, let’s assume the problem is about calculating the total score based on a series of commands. the problem might involve processing input data, which could be structured in a simple format.

example problem

for instance, let's say the input consists of pairs of numbers, where each pair represents a horizontal and vertical movement. the task is to calculate the final position by multiplying the final horizontal position with the final vertical position.

sample input

```
forward 5
down 5
forward 8
up 3
down 8
forward 2
```

implementation in neovim

1. **write the code**: start coding in neovim. here's a simple python solution for the problem:

```python

def main():
horizontal_position = 0
vertical_position = 0


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