diff --git "a/03do-new30/202507/17 BOJ G4 \353\254\270\354\236\220\354\227\264 \355\217\255\353\260\234.md" "b/03do-new30/202507/17 BOJ G4 \353\254\270\354\236\220\354\227\264 \355\217\255\353\260\234.md"
new file mode 100644
index 00000000..e48a1d7c
--- /dev/null
+++ "b/03do-new30/202507/17 BOJ G4 \353\254\270\354\236\220\354\227\264 \355\217\255\353\260\234.md"	
@@ -0,0 +1,41 @@
+```java
+import java.util.*;
+import java.io.*;
+
+public class Main {
+    public static void main(String[] args) throws IOException {
+        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
+        String str = br.readLine();
+        String target = br.readLine();
+        int n = str.length();
+        int m = target.length();
+        Deque<Character> deque = new ArrayDeque<>();
+
+        for (int i = 0; i < n; i++) {
+            deque.offerFirst(str.charAt(i));
+            int idx = m-1;
+            Deque<Character> tmp = new ArrayDeque<>();
+            while (!deque.isEmpty() && idx >= 0 && deque.peekFirst() == target.charAt(idx)) {
+                tmp.offerFirst(deque.pollFirst());
+                idx--;
+            }
+            if (tmp.size() != m) {
+                while(!tmp.isEmpty()) {
+                    deque.offerFirst(tmp.pollFirst());
+                }
+            }
+        }
+
+        if (deque.isEmpty()) {
+            System.out.println("FRULA");
+        } else {
+            StringBuilder sb = new StringBuilder();
+            while (!deque.isEmpty()) {
+                sb.append(deque.pollLast());
+            }
+            System.out.println(sb);
+        }
+        br.close();
+    }
+}
+```