add day 9 solutions

1 files changed, 3 insertions, 0 deletions

diff --git a/9s.txt b/9s.txt
new file mode 100644
index 0000000..539a763
--- /dev/null
+++ b/9s.txt
@@ -0,0 +1,3 @@
+0 3 6 9 12 15
+1 3 6 10 15 21
+10 13 16 21 30 45