1 files changed, 8 insertions, 0 deletions
diff --git a/day01.ijs b/day01.ijs
new file mode 100644
index 0000000..697d9dd
--- /dev/null
+++ b/day01.ijs
@@ -0,0 +1,8 @@
+load 'aoc.ijs'
+d =: nums 'day01'
+
+*/ {: (#"1~ 2020&=@:(+/)) |:,/,"0/~ d                       NB. 805731
+([ * 2020 - [) (<./ (i. (2020&-)) d) { d                    NB. bit faster
+*/2{.d/:(2020-d)i.d                                         NB. shortest
+
+*/ {:"1 (#"1~ 2020&=@:(+/)) |: d {~ ((#: i.@(*/)) 3 ## d)   NB. 192684960