diff --git a/part1/run.w_corpus.sh b/part1/run.w_corpus.sh
index 336728b..abc3c8d 100755
--- a/part1/run.w_corpus.sh
+++ b/part1/run.w_corpus.sh
@@ -9,3 +9,5 @@ python3 infra/helper.py build_fuzzers --clean libpng
 
 mkdir -p build/out/corpus
 python3 infra/helper.py run_fuzzer libpng libpng_read_fuzzer --corpus-dir build/out/corpus
+python3 infra/helper.py build_fuzzers --sanitizer coverage libpng
+python3 infra/helper.py coverage libpng --corpus-dir build/out/corpus --fuzz-target libpng_read_fuzzer
diff --git a/part1/run.w_o_corpus.sh b/part1/run.w_o_corpus.sh
new file mode 100755
index 0000000..77fce87
--- /dev/null
+++ b/part1/run.w_o_corpus.sh
@@ -0,0 +1,13 @@
+#!/bin/bash
+COMMIT_HASH="bfed7dce6c66af5ff844ec880333848def837d50"
+
+git clone https://github.com/SekoiaTree/oss-fuzz.git oss-fuzz-wo
+cd oss-fuzz-wo
+git checkout $COMMIT_HASH
+python3 infra/helper.py build_image --pull libpng
+python3 infra/helper.py build_fuzzers --clean libpng
+
+mkdir -p build/out/corpus
+python3 infra/helper.py run_fuzzer libpng libpng_read_fuzzer --corpus-dir build/out/corpus
+python3 infra/helper.py build_fuzzers --sanitizer coverage libpng
+python3 infra/helper.py coverage libpng --corpus-dir build/out/corpus --fuzz-target libpng_read_fuzzer