diff --git a/debugging/lecture/figures/editor_debugger.png b/debugging/lecture/figures/editor_debugger.png
new file mode 100644
index 0000000..87f187e
Binary files /dev/null and b/debugging/lecture/figures/editor_debugger.png differ
diff --git a/programming/exercises/vectors_matrices.tex b/programming/exercises/vectors_matrices.tex
index 2e5ca46..5c7d79c 100644
--- a/programming/exercises/vectors_matrices.tex
+++ b/programming/exercises/vectors_matrices.tex
@@ -1,4 +1,4 @@
-\documentclass[12pt,a4paper,pdftex]{exam}
+\documentclass[12pt,a4paper,pdftex, answers]{exam}
 
 \usepackage[german]{babel}
 \usepackage{natbib}