diff --git a/problems/0383.赎金信.md b/problems/0383.赎金信.md
index 00707347..5d9e8295 100644
--- a/problems/0383.赎金信.md
+++ b/problems/0383.赎金信.md
@@ -84,6 +84,10 @@ class Solution {
 public:
     bool canConstruct(string ransomNote, string magazine) {
         int record[26] = {0};
+        //add
+        if (ransomNote.size() > magazine.size()) {
+            return false;
+        }
         for (int i = 0; i < magazine.length(); i++) {
             // 通过recode数据记录 magazine里各个字符出现次数
             record[magazine[i]-'a'] ++;