diff --git a/.gitignore b/.gitignore
index 3a9f8d3..2b2fd19 100644
--- a/.gitignore
+++ b/.gitignore
@@ -12,5 +12,4 @@ metric*
 *.abc
 *.bak
 *.idx
-images/cover.jpg
-
+images/cover.jpg
\ No newline at end of file
diff --git a/build/ssfm.pdf b/build/ssfm.pdf
index 88389b1..6ebf3da 100644
Binary files a/build/ssfm.pdf and b/build/ssfm.pdf differ