d = tonumber(read())
l = tonumber(read())
h = tonumber(read())
turnRight = true
fuelNeeded = d * l * h + d + l + h - 1
fuelLevel = turtle.getFuelLevel()
y = 0
x = 0
z = 0
function clearInventory()
	turtle.turnRight()
	for i = 1, 16 do
		turtle.drop(64)
	end
	turtle.turnLeft()
end
function turnArround()
	turtle.turnRight()
	turtle.turnRight()
end
function returnToChest()
	for i = 1, y do
		turtle.up()
	end
	if (z > 0) then
		turnRight = not turnRight
		turn()
		for i = 1, z do
			turtle.forward()
		end
		turnRight = not turnRight
		turn()
	end
	if (turnRight) then turnArround() end
	for i = 1, x do
		turtle.forward()
	end
	turnArround()
end
function digAndMove(dir)
	array = {}
	skip = false
	detecting = false
	if (dir == 1) then detecting = turtle.detect() else detecting = turtle.detectDown() end
	while (detecting) do
		for i = 1, 16 do
			if (turtle.getItemCount(i) == not null) then
				a[i] = turtle.getItemCount(i)
			else
				skip = true
			end
		end
		if (dir == 1) then
			turtle.dig()
		elseif (dir == 2) then
			turtle.digUp()
		end
		turtle.suck()
		if (not skip) then
			for i = 1, 16 do
				if (turtle.getItemCount(i) == not a[i]) then break end
				if (i == 16) then
					returnToChest()
					clearInventory()
					for i = 1, y do
						turtle.down()
					end
					for i = 1, x do
						turtle.forward()
					end
					if (z > 0) then
						turtle.turnRight()
						for i = 1, z do
							turtle.forward()
						end
					end
					if (not turnRight) then turnArround() end
					break;
				end
			end
		end
		if (dir == 1) then detecting = turtle.detect() else detecting = turtle.detectDown() end
	end
	if (dir == 1) then
		turtle.forward()
	elseif (dir == 2) then
		turtle.down()
	end

end
function turn ()
	if (turnRight) then turtle.turnRight() else turtle.turnLeft() end
end
clearInventory()
-- if (fuelLevel < fuelNeeded) then turtle.suck((fuelNeeded - fuelLevel) / 80) end
digAndMove(1)
x = x + 1
for i = 1, h do
	for j = 1, l do
		if (j > 1) then
			turn()
			digAndMove(1)
			if ((y + 2) % 2 == 0) then z = z + 1 else z = z - 1 end
			turn()
			turnRight = not turnRight
		end
		for k = 2, d do
			digAndMove(1)
			if (turnRight) then x = x + 1 else x = x - 1 end
		end
	end
	if (i < h) then
		digAndMove(2)
		y = y + 1
		turnArround()
	end
end
returnToChest()
clearInventory()