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t = turtle
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function distanceInput()
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	print("Input Distance")
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	num = io.read
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	num = io.read()
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	num = tonumber(num)
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	return num
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end
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function fuel(distance)
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	t.refuel()
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end
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function hole(distance)
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	while distance > 0 do
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		if t.detectDown() then
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			t.digDown()
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			t.down()
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		else
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			t.down()
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		end
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	distance = distance - 1
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	end
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end
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function modulo(tile)
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	while tile > 8 do
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		tile = tile - 8
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	end
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	print("Currently at tile: ", tile)
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	return tile
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end
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function turn(num)
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	while num > 0 do
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		t.turnRight()
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		num = num - 1
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	end
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end
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function turnAround()
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	t.turnLeft()
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	t.turnLeft()
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end
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function dleft()
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	t.turnLeft()
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	if t.detect() then
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		t.dig()
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		t.forward()
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	else
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		t.forward()
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	end
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	t.turnRight()
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end
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function dright()
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	t.turnRight()
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	if t.detect() then
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		t.dig()
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		t.forward()
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	else
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		t.forward()
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	end
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	t.turnLeft()
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end
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function dback()
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	turnAround()
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	if t.detect() then
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		t.dig()
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		t.forward()
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	else
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		t.forward()
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function bforward()
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	turnAround()
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end
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function dforward()
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	if t.detect() then
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		t.dig()
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		t.forward()
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	else
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		t.forward()
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	end
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end
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function mineLayer(module)
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	if module == 2 or module == 4 or module == 6 or module == 8 then
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		turn(module/2)
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		dleft()
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		dforward()
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		dback()
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		dback()
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		dright()
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		dright()
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		dforward()
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		dforward()
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		dback()
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		dleft()
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	else
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		turn((module+1)/2)
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		dforward()
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		dright()
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		dback()
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		dback()
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		dleft()
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		dleft()
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		dforward()
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		dright()
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	end
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end
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function mine(distance)
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	module = 0
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	while distance > 0 do
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		module = modulo(distance)
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		mineLayer(module)
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		t.up()
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		distance = distance - 1
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	end
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end
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function spiral()
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	distance = distanceInput()
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end
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	fuel(distance)
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	print("3x3 Spiral Initiated; No further input required")
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	hole(distance)
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	mine(distance)
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end
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spiral()