write("length:")
local length = tonumber(read())
write("width:")
local width = tonumber(read())
width=width-1
write("depth:")
local depth = tonumber(read())
for d=1, depth do
    turtle.digDown()
    turtle.down()
    for i=1,length do
        turtle.turnRight()
        for j=1, width do
            turtle.dig()
            turtle.forward()
        end
        turtle.turnRight()
        turtle.turnRight()
        for j=1, width do
            turtle.forward()
        end
        turtle.turnRight()
        if i<length do
            turtle.dig()
            turtle.forward()
        end
    end
    for i=1, lenght do
        turtle.back()
    end
end