use std::fs::File;
use std::io::prelude::*;
use std::io::Result;
use std::time::Instant;

fn main() -> Result<()> {
    let start_time = Instant::now();
    let mut x = File::open("./data").expect("file not found");
    let mut content = String::new();
    x.read_to_string(&mut content)?;

    // Part 1
    let mut elf: Vec<i32> = content
        .split("\n")
        .collect::<Vec<&str>>()
        .split(|line| line.is_empty())
        .map(|line| line.iter().fold(0, |acc, x| acc + x.parse::<i32>().unwrap()))
        .collect();

    // Part 1 version 2
    // let mut elf: Vec<i32> = content
    //     .lines()
    //     .map(|line| line.parse::<i32>().unwrap_or_default())
    //     .collect::<Vec<i32>>()
    //     .split(|line| *line == 0)
    //     .map(|x| x.iter().fold(0, |acc, x| acc + x))
    //     .collect();
    println!("Elf with: {} Calories", elf.iter().max().unwrap());
    let duration = start_time.elapsed();
    println!("{:?}", duration);

    // Part 2
    elf.sort();
    let max = elf.pop().unwrap();
    let mid = elf.pop().unwrap();
    let min = elf.pop().unwrap();
    println!("{:?}", max + mid + min);
    Ok(())
}