#!/bin/env ruby
#Find the two entries that sum to 2020; what do you get if you multiply them together?

numbers = File.readlines('./input')
numbers.each do |num1|
    numbers.each do |num2|
        sum = num1.to_i + num2.to_i
        puts num1.strip + '+' + num2.strip + '=' + sum.to_s
        if sum == 2020
            puts num1.to_i * num2.to_i
            exit
        end
    end
end