Cobble Challenge

local start=os.clock()
local t=turtle.native
t.suck()
coroutine.yield("turtle_response")
for i=1,63 do
t.placeUp()
t.digUp()
coroutine.yield("turtle_response")
coroutine.yield("turtle_response")
end
t.placeUp()
t.select(2)
t.digUp()
coroutine.yield("turtle_response")
coroutine.yield("turtle_response")
coroutine.yield("turtle_response")
t.drop()
coroutine.yield("turtle_response")
local endtime=os.clock() t.select(1) print("End time: "..endtime-start.." seconds.") --t.select(1) is not needed, just cleaner.