diff --git a/exercise4/Makefile b/exercise4/Makefile
index 9a00b06..cad9f11 100644
--- a/exercise4/Makefile
+++ b/exercise4/Makefile
@@ -36,3 +36,8 @@ check: dirs sequential parallel
 	rm -rf data_sequential
 clean:
 	-rm -fr sequential parallel data images wave.mp4
+report.pdf: report/report.md
+	pandoc $< -o report/$@ --pdf-engine=typst
+zip: $(PARALLEL_SRC_FILES) report/report.pdf
+	zip handin.zip $^
+
diff --git a/exercise4/parallel b/exercise4/parallel
new file mode 100755
index 0000000..a66c820
Binary files /dev/null and b/exercise4/parallel differ
diff --git a/exercise4/sequential b/exercise4/sequential
new file mode 100755
index 0000000..1e19ff1
Binary files /dev/null and b/exercise4/sequential differ
diff --git a/exercise4/wave.mp4 b/exercise4/wave.mp4
new file mode 100644
index 0000000..af42369
Binary files /dev/null and b/exercise4/wave.mp4 differ