1 files changed, 3 insertions, 0 deletions
diff --git a/day04.k b/day04.k
new file mode 100644
index 0000000..0fd8d7a
--- /dev/null
+++ b/day04.k
@@ -0,0 +1,3 @@
+(a;b;c;d):+(.',/"-"\'","\)'0:"day04"
++/1>(c-a)*d-b
++/1>(d-a)*c-b