local datastring = [[ /* Dreieck hier*/ ]]

data = {string.split("\n", datastring)}
for k,v in ipairs(data) do
	data[k] = {string.split(" ", v)}
end

local maskmult = 128
sum = setmetatable({}, {__index=function(self,pos)
	local x = floor(pos/maskmult)
	local y = mod(pos, maskmult)
	local summe = data[x] and data[x][y] and tonumber(data[x][y]) \
		+ max(sum[(x + 1) * maskmult + y], sum[(x + 1) * maskmult + y + 1]) or 0
	self[pos] = summe
	return summe
end})

print(sum[1 * maskmult + 1])