Notes on how I graded Problem 3 of Quiz1:

	-3 pts		-- solve over integers, not over Z_143
			   (e.g. soln is {x : x = 74 + 143k for some k in Z })

	-5 pts		-- no reasoning given

	-5 to -7 pts	-- solution was (143k+5)/2 (no restriction on k)
		           (this is solution over rationals)

	various		-- other errors


Ron Rivest