1 files changed, 19 insertions, 0 deletions
diff --git a/2019/13/puzzle-1.lisp b/2019/13/puzzle-1.lisp
new file mode 100755
index 0000000..aeda572
--- /dev/null
+++ b/2019/13/puzzle-1.lisp
@@ -0,0 +1,19 @@
+#!/usr/bin/sbcl --script
+
+(load "../interpreter.lisp")
+
+(defun main (filename)
+  (let ((blocks (make-hash-table))
+        parts)
+    (intcode:run (intcode:parse "input") nil
+                 (lambda (msg)
+                   (if (< (length parts) 2)
+                       (push msg parts)
+                       (let ((y (first  parts))
+                             (x (second parts)))
+                         (when (= msg 2)
+                           (setf (gethash (complex x y) blocks) t))
+                         (setq parts nil)))))
+    (hash-table-count blocks)))
+
+(format t "~d~%" (main "input"))
+\ No newline at end of file