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+#+title: Solution to p5
+
+First load the data as a list of cons cells (start . end)
+#+begin_src emacs-lisp :results none
+  (with-temp-buffer
+    (insert-file-contents "input-test")
+    (advent/replace-multiple-regex-buffer
+     '(
+       ("^\\([0-9]*\\)-\\([0-9]*\\)$" . "(\\1 . \\2)")
+       ("^$" . ") ids '(")))
+    (goto-char (point-min))
+    (insert "(setq ranges '(")
+    (goto-char (point-max))
+    (insert "))")
+    (eval-buffer))
+#+end_src
+