t1

turtle.refuel()
t = 0
x=tonumber(read())
while x>0 do
turtle.dig()
turtle.forward()
turtle.digDown()
turtle.digUp()
turtle.turnLeft()
turtle.dig()
turtle.forward()
turtle.turnRight()
turtle.digUp()
turtle.digDown()
turtle.turnRight()
turtle.forward()
turtle.dig()
turtle.forward()
turtle.turnLeft()
turtle.digDown()
turtle.digUp()
turtle.turnLeft()
turtle.forward()
turtle.turnRight()
x = x - 1
t = t + 1
if t== 8 then
turtle.select(16)
turtle.digDown()
turtle.placeDown()
turtle.select(1)
t = 1
end
if turtle.getItemCount(15)>0 then
turtle.select(1)
turtle.digDown()
turtle.placeDown()
for i=2,15 do
turtle.select(i)
turtle.dropDown()
end
turtle.select(2)
end
end