diff --git "a/JHLEE325/202601/27 BOJ G4 \354\235\214\354\213\235 \355\217\211\353\241\240\352\260\200.md" "b/JHLEE325/202601/27 BOJ G4 \354\235\214\354\213\235 \355\217\211\353\241\240\352\260\200.md"
new file mode 100644
index 00000000..7f048db3
--- /dev/null
+++ "b/JHLEE325/202601/27 BOJ G4 \354\235\214\354\213\235 \355\217\211\353\241\240\352\260\200.md"	
@@ -0,0 +1,27 @@
+```java
+import java.io.*;
+import java.util.*;
+
+public class Main {
+    public static void main(String[] args) throws Exception {
+        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
+        StringTokenizer st = new StringTokenizer(br.readLine());
+        
+        int n = Integer.parseInt(st.nextToken());
+        int m = Integer.parseInt(st.nextToken());
+
+        int res = m - gcd(n, m);
+        
+        System.out.println(res);
+    }
+
+    public static int gcd(int a, int b) {
+        while (b != 0) {
+            int r = a % b;
+            a = b;
+            b = r;
+        }
+        return a;
+    }
+}
+```