diff --git a/work/Blind/deduction.js b/work/Blind/deduction.js
index 3afea78..9f11ac4 100644
--- a/work/Blind/deduction.js
+++ b/work/Blind/deduction.js
@@ -17,6 +17,7 @@
 // problem1([5])               => [0]
 // problem1([4, 1, 4, 1])      => [2, 0, 2, 0]
 function problem1(arr) {
+	// your code
 }
 
 // ---- problem2 ----