const equations::Vector{Vector{Int}} = [ map(x -> parse(Int, x), split(line, Regex("[:\\s]+"))) for line in readlines("input/7") ]

partOne, partTwo = 0, 0

concat(a::Number, b::Number) = a * 10^ndigits(b) + b

for (target,nums) in Iterators.peel.(equations)
	nums = collect(nums)
	function testCase(funcs::Tuple, p = 1, sum = 0)::Bool
		if p > length(nums)
			return sum == target 
		end
		return any(testCase(funcs, p+1, fn(sum, nums[p])) for fn in funcs)
	end
	if testCase((+, *))
		global partOne += target
	end
	if testCase((+, *, concat))
		global partTwo += target
	end
end

@show partOne, partTwo