--- 1613457.somma2.output	2018-05-25 16:55:54.085957128 +0200
+++ somma2.out	2018-05-23 11:22:41.134333169 +0200
@@ -1,4 +1,3 @@
 42
 a1b2c3d4e5f6g7h8i9j1k2l3m4n5o6p7q8r9s1t2u3v4w5x6y7z9................................
-
-
+-14