diff --git a/103_Elementare_Datenstrukturen.tex b/103_Elementare_Datenstrukturen.tex
index ee836efc680d5005051b9b0c87b204fe9619e1b3..b34a6cc8ecc748292588cee17ab588a0f9dc34f2 100644
--- a/103_Elementare_Datenstrukturen.tex
+++ b/103_Elementare_Datenstrukturen.tex
@@ -58,6 +58,7 @@ Wir geben daher später keine Laufzeiten für das Einfügen oder Entfernen von E
 
 \begin{figure}[!htp]
   \centering
+  \tikzsetnextfilename{array}
   \begin{tikzpicture}[box/.style = {draw, minimum size=9mm, inner sep=0pt, outer sep=0pt, anchor=center},]
     \matrix (array) [matrix of nodes, nodes={box}, column sep=-\pgflinewidth, inner sep=0pt]
     {
diff --git a/Datenstrukturen_und_Algorithmen.tex b/Datenstrukturen_und_Algorithmen.tex
index 7f4f6bf11919dcc072430ebe74a08750178a804f..f8764a77000f582829c1a1d31d89a43ad1ea031b 100644
--- a/Datenstrukturen_und_Algorithmen.tex
+++ b/Datenstrukturen_und_Algorithmen.tex
@@ -64,6 +64,8 @@
   \parfillskip \z@skip}
 \makeatother
 
+% ignore overfull hboxes
+\hfuzz=45pt
 \begin{document}
 \tableofcontents
 
diff --git a/bilder/Halde_baum.pdf b/bilder/Halde_baum.pdf
deleted file mode 100755
index aaac08c32336bef5b99d95e33f8f6c09c29d2c5e..0000000000000000000000000000000000000000
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diff --git a/bilder/halde_zahlen.pdf b/bilder/halde_zahlen.pdf
deleted file mode 100755
index 8b280abeabd244dc78da6b185299145c6a82ac80..0000000000000000000000000000000000000000
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