Tue, 28 Jul 2009 12:11:33 +0200 slightly changed exercises about rev_sum
Christian Urban <urbanc@in.tum.de> [Tue, 28 Jul 2009 12:11:33 +0200] rev 293
slightly changed exercises about rev_sum
(0) -100 -30 -10 -1 +1 +10 +30 +100 tip