Day 1

1 files changed, 12 insertions, 0 deletions

diff --git a/readme.org b/readme.org
new file mode 100644
index 0000000..c1923ac
--- /dev/null
+++ b/readme.org
@@ -0,0 +1,12 @@
+* Advent of Code 2019
+
+** Personal challenge
+
+Try to keep the solution pure. Only main can do IO things, like return
+different results when it's called differently. The rest of the
+program should only be pure expressions.
+
+** Optimizations
+
+- Limit the use of statements. Try to use expressions instead, or move
+  the statement out to a function.