diff --git "a/lkhyun/202510/12 BOJ G5 \353\213\244\354\235\264\354\226\264\355\212\270.md" "b/lkhyun/202510/12 BOJ G5 \353\213\244\354\235\264\354\226\264\355\212\270.md"
new file mode 100644
index 00000000..00c9c15d
--- /dev/null
+++ "b/lkhyun/202510/12 BOJ G5 \353\213\244\354\235\264\354\226\264\355\212\270.md"	
@@ -0,0 +1,41 @@
+```java
+import java.util.*;
+import java.io.*;
+
+public class Main{
+    static BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
+    static BufferedWriter bw = new BufferedWriter(new OutputStreamWriter(System.out));
+    static StringBuilder sb = new StringBuilder();
+    static int G;
+
+    public static void main(String[] args) throws Exception {
+        G = Integer.parseInt(br.readLine());
+        List<Integer> results = new ArrayList<>();
+        for (int b = 1; b * b <= G; b++) {
+            if (G % b == 0) {
+                int a = G / b;
+                
+                if ((a + b) % 2 == 0) {
+                    int c = (a + b) / 2;
+                    int p = (a - b) / 2;
+                    
+                    if (p >= 1) {
+                        results.add(c);
+                    }
+                }
+            }
+        }
+        
+        if (results.isEmpty()) {
+            bw.write("-1");
+        } else {
+            Collections.sort(results);
+            for (int weight : results) {
+                bw.write(weight + "\n");
+            }
+        }
+        
+        bw.close();
+    }
+}
+```