sln_2020_01

Copyright	(c) Eric Mertens 2020
License	ISC
Maintainer	emertens@gmail.com
Safe Haskell	None
Language	Haskell2010

Main

Description

https://adventofcode.com/2020/day/1

Find entries in an expense report that sum up to 2020 and return their product.

Synopsis

main :: IO ()
solve :: [Int] -> Int -> Int
solve' :: [Int] -> Int -> Int -> Int -> Int -> Int

Documentation

main :: IO () Source #

>>> :main
494475
267520550

Arguments

:: [Int]	inputs
-> Int	count
-> Int	product

Given a list of integer inputs, find the product of count entries that sum up to 2020.

>>> solve [1721, 979, 366, 299, 675, 1456] 2
514579

| >>> solve [1721, 979, 366, 299, 675, 1456] 3 241861950

solve' Source #

Arguments

:: [Int]	sorted inputs
-> Int	count
-> Int	target sum
-> Int	current product
-> Int	next alternative
-> Int	final product