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advent-of-code-2022/ocaml/1.ml

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OCaml

#load "str.cma" ;;
#use "lib/utils.ml" ;;
let top n calories =
let topn = List.filteri (fun i _ -> i < n) calories in
let numcal = List.fold_left (+) 0 topn in
Printf.printf "Top %d: %d\n" n numcal
;;
let order_desc a b = if a < b then 1 else -1 in
let contents = read_file "inputs/1.txt" in
let calories = Str.split (Str.regexp "\n\n") contents
|> List.map (String.split_on_char '\n')
|> List.map (List.map (int_of_string))
|> List.map (List.fold_left (+) 0)
|> List.sort order_desc
in
top 1 calories;
top 3 calories