local distance = 32
local stop = false

while not stop do
    local success, data = turtle.inspectDown()
    if success then
     if data.name == "minecraft:rail" then
        turtle.digDown()
        turtle.select(2)
        turtle.placeDown()
        turtle.turnLeft()
        forward = turtle.forward()
        if not forward then
            turtle.dig()
            turtle.forward()
        end
        turtle.select(3)
        if turtle.detectDown() then
            turtle.digDown()
        end
        turtle.placeDown()
        turtle.turnRight()
        turtle.turnRight()
        turtle.forward()
        turtle.turnLeft()
        if turtle.getItemCount(2) > 0 then
            for i = 1, distance do
                canForward = turtle.forward()
                if not canForward then
                    stop = true
                    break
                end
                local success = turtle.inspectDown()
                if not success then
                    turtle.select(4)
                    turtle.placeDown()
                    if turtle.getItemCount(4) == 0 then
                        for i = 5, 16 do
                            data = turtle.getItemDetail(i)
                            if data then
                                if data.name ==  "minecraft:rail" then
                                    turtle.select(i)
                                    turtle.transferTo(4, 64)
                                    break
                                end
                            end
                        end
                        if turtle.getItemCount(4) == 0 then
                            stop = true
                        end
                    end
                end
            end
         else
            stop = true
         end
     end
    else
        stop = true
    end
end
print ("The End of the World!")