1  #![feature(test)]
 2  
 3  type Input = Vec<i32>;
 4  
 5  fn setup(input: &str) -> Input {
 6      input.lines().map(|x| x.parse().unwrap()).collect()
 7  }
 8  
 9  fn count(input: &Input, window: usize) -> i32 {
10      let mut out = 0;
11      for (a, b) in input.iter().zip(&input[window..]) {
12          if b > a {
13              out += 1;
14          }
15      }
16      out
17  }
18  
19  fn part1(input: &Input) -> String {
20      count(input, 1).to_string()
21  }
22  
23  fn part2(input: &Input) -> String {
24      count(input, 3).to_string()
25  }
26  
27  aoc::main!(2021, 1, ex: 1);