From 7fc14695f89e8f37d0e8557737a13884d8456a52 Mon Sep 17 00:00:00 2001
From: zinnnn37 <zinnnn37@gmail.com>
Date: Tue, 24 Feb 2026 23:52:40 +0900
Subject: [PATCH] =?UTF-8?q?[20260224]=20BOJ=20/=20G5=20/=20A=EC=99=80=20B?=
 =?UTF-8?q?=202=20/=20=EA=B9=80=EB=AF=BC=EC=A7=84?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 .../202602/24 BOJ G5 A\354\231\200 B 2.md"    | 50 +++++++++++++++++++
 1 file changed, 50 insertions(+)
 create mode 100644 "zinnnn37/202602/24 BOJ G5 A\354\231\200 B 2.md"

diff --git "a/zinnnn37/202602/24 BOJ G5 A\354\231\200 B 2.md" "b/zinnnn37/202602/24 BOJ G5 A\354\231\200 B 2.md"
new file mode 100644
index 00000000..67910bbe
--- /dev/null
+++ "b/zinnnn37/202602/24 BOJ G5 A\354\231\200 B 2.md"	
@@ -0,0 +1,50 @@
+```java
+import java.io.*;
+
+public class BJ_12919_A와_B_2 {
+
+    private static final BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
+    private static final BufferedWriter bw = new BufferedWriter(new OutputStreamWriter(System.out));
+
+    private static int    res;
+    private static String from, to;
+
+    public static void main(String[] args) throws IOException {
+        init();
+        sol();
+    }
+
+    private static void init() throws IOException {
+        from = br.readLine();
+        to = br.readLine();
+    }
+
+    private static void sol() throws IOException {
+        bw.write(rec(to) + "");
+        bw.flush();
+        bw.close();
+        br.close();
+    }
+
+    private static int rec(String to) throws IOException {
+        if (from.equals(to)) {
+            return 1;
+        }
+
+        if (to.length() < from.length()) {
+            return 0;
+        }
+
+        if (to.charAt(to.length() - 1) == 'A') {
+            res = rec(to.substring(0, to.length() - 1));
+        }
+
+        if (to.charAt(0) == 'B') {
+            StringBuilder tmp = new StringBuilder(to.substring(1));
+            res = Math.max(res, rec(tmp.reverse().toString()));
+        }
+        return res;
+    }
+
+}
+```
\ No newline at end of file