diff --git a/.gitignore b/.gitignore
index b6889c4..0ab1c23 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,5 +1,5 @@
 .idea/
-Pipfile.lock
+*.pdf
 
 # Byte-compiled / optimized / DLL files
 __pycache__/
diff --git a/problems-answers.pdf b/problems-answers.pdf
deleted file mode 100644
index c0753a5..0000000
Binary files a/problems-answers.pdf and /dev/null differ
diff --git a/problems.pdf b/problems.pdf
deleted file mode 100644
index 93f895a..0000000
Binary files a/problems.pdf and /dev/null differ