diff --git "a/JHLEE325/202509/13 BOJ G4 \355\214\200 \353\271\214\353\224\251.md" "b/JHLEE325/202509/13 BOJ G4 \355\214\200 \353\271\214\353\224\251.md"
new file mode 100644
index 00000000..4cf7d813
--- /dev/null
+++ "b/JHLEE325/202509/13 BOJ G4 \355\214\200 \353\271\214\353\224\251.md"	
@@ -0,0 +1,37 @@
+```java
+import java.io.*;
+import java.util.*;
+
+public class Main {
+
+    public static void main(String[] args) throws IOException {
+        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
+        StringTokenizer st;
+
+        int n = Integer.parseInt(br.readLine());
+
+        int[] pgm = new int[n];
+
+        st = new StringTokenizer(br.readLine());
+
+        for (int i = 0; i < n; i++) {
+            pgm[i] = Integer.parseInt(st.nextToken());
+        }
+
+        int left = 0;
+        int right = n - 1;
+        int res = 0;
+
+        while (left < right) {
+            res = Math.max((right - left - 1) * Math.min(pgm[left], pgm[right]), res);
+            if (pgm[left] <= pgm[right]) {
+                left++;
+            } else {
+                right--;
+            }
+        }
+
+        System.out.println(res);
+    }
+}
+```