diff --git a/pre.rkt b/pre.rkt
new file mode 100644
index 0000000..2152b83
--- /dev/null
+++ b/pre.rkt
@@ -0,0 +1,4 @@
+#lang racket/base
+
+(require "main.rkt")
+(provide (all-from-out "main.rkt"))
\ No newline at end of file