1 files changed, 2 insertions, 0 deletions

diff --git a/2.lua b/2.lua
index f8068ef..6b52b71 100644..100755
--- a/2.lua
+++ b/2.lua
@@ -1,3 +1,5 @@
+#!/usr/bin/env lua
+
 local function is_safe(a)
   local up = false
   local down = false