#!/usr/bin/env lua
-- I'm feeling lazy.
local numbers = {}

for line in io.lines() do
    table.insert(numbers, tonumber(line))
end

local function part1()
    for _, x in ipairs(numbers) do
        for _, y in ipairs(numbers) do
            if x + y == 2020 then
                return x * y
            end
        end
    end
end

local function part2()
    for _, x in ipairs(numbers) do
        for _, y in ipairs(numbers) do
            for _, z in ipairs(numbers) do
                if x + y + z == 2020 then
                    return x * y * z
                end
            end
        end
    end
end

print(part1())
print(part2())