diff --git a/problems/0383.赎金信.md b/problems/0383.赎金信.md
index d9a184b6..a3f87d4a 100644
--- a/problems/0383.赎金信.md
+++ b/problems/0383.赎金信.md
@@ -117,6 +117,10 @@ Java：
 ```Java
 class Solution {
     public boolean canConstruct(String ransomNote, String magazine) {
+        // shortcut
+        if (ransomNote.length() > magazine.length()) {
+            return false;
+        }
         // 定义一个哈希映射数组
         int[] record = new int[26];