borkdude

{ pkgs ? import <nixpkgs> {} }:

let
  graalvm21_2_0 = import (builtins.fetchGit {
    # Descriptive name to make the store path easier to identify
    name = "graalvm-21.2.0";
    url = "https://github.com/NixOS/nixpkgs";
    ref = "refs/heads/nixpkgs-unstable";
    rev = "e4dda76e6397fb1e30b907abeaf6a72bb055a1e6";
  }) {};

borkdude

(ns aoc21-01
  (:require [clojure.string :as str]))

(def input (map parse-long (str/split-lines (slurp "input.txt"))))

(defn answer-01 [input]
  (count (filter true? (map < input (rest input)))))

(def three-sliding-window
  (map + input (next input) (nnext input)))