diff --git "a/JHLEE325/202603/17 BOJ G4 \354\236\240\354\210\230\355\225\250\354\213\235\353\263\204.md" "b/JHLEE325/202603/17 BOJ G4 \354\236\240\354\210\230\355\225\250\354\213\235\353\263\204.md"
new file mode 100644
index 00000000..f15eebe4
--- /dev/null
+++ "b/JHLEE325/202603/17 BOJ G4 \354\236\240\354\210\230\355\225\250\354\213\235\353\263\204.md"	
@@ -0,0 +1,19 @@
+```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));
+        String sound = br.readLine();
+
+        String regex = "(100+1+|01)+";
+
+        if (sound.matches(regex)) {
+            System.out.println("SUBMARINE");
+        } else {
+            System.out.println("NOISE");
+        }
+    }
+}
+```