print("+-------------------------------------+")
print("| Area length = ?                     |")
print("+-------------------------------------+")
l = tonumber(read())
print("+-------------------------------------+")
print("| Area depth = ?                     |")
print("+-------------------------------------+")
d = tonumber(read())

for i = 0, d-1, 1 do
    turtle.digDown()
    for j = 0, l-2, 1 do
        turtle.refuel()
        turtle.dig()
        turtle.forward()
        turtle.digDown()
    end
    for j = 0, l-2, 1 do
        turtle.back()
    end
    turtle.down()
end
for i = 0, d-1, 1 do
    turtle.up()
end