diff --git "a/0224LJH/202508/9 BOJ  \354\240\200\354\232\270.md" "b/0224LJH/202508/9 BOJ  \354\240\200\354\232\270.md"
new file mode 100644
index 00000000..33c6a5d9
--- /dev/null
+++ "b/0224LJH/202508/9 BOJ  \354\240\200\354\232\270.md"	
@@ -0,0 +1,60 @@
+```java
+import java.awt.*;
+import java.io.BufferedReader;
+import java.io.IOException;
+import java.io.InputStreamReader;
+import java.util.*;
+import java.util.List;
+
+
+public class Main {
+
+    static int size,ans;
+    static int[] arr;
+
+
+
+    public static void main(String[] args) throws IOException {
+        init();
+        process();
+        print();
+    }
+
+    private static void init() throws IOException {
+        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
+        size = Integer.parseInt(br.readLine());
+        arr = new int[size];
+        ans = 0;
+        StringTokenizer st = new StringTokenizer(br.readLine());
+
+        for (int i = 0; i < size; i++) {
+            arr[i] = Integer.parseInt(st.nextToken());
+        }
+
+
+    }
+
+    private static void process() throws IOException {
+        Arrays.sort(arr);
+
+        if ( arr[0] != 1) return;
+        ans = 1;
+
+        for (int i = 1; i < arr.length; i++) {
+            if (arr[i] > ans +1) {
+                return;
+            }
+            ans += arr[i];
+
+        }
+
+
+
+    }
+
+
+    private static void print() {
+        System.out.println(ans+1);
+    }
+}
+```
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