From 535a4246f89f909befa5537d5994e06f462c5631 Mon Sep 17 00:00:00 2001
From: JHLEE325 <82587652+JHLEE325@users.noreply.github.com>
Date: Mon, 10 Nov 2025 08:30:38 +0900
Subject: [PATCH] =?UTF-8?q?[20251110]=20BOJ=20/=20G4=20/=20=EC=A2=8B?=
 =?UTF-8?q?=EC=9D=80=20=EC=88=98=EC=97=B4=20/=20=EC=9D=B4=EC=A4=80?=
 =?UTF-8?q?=ED=9D=AC?=
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Content-Type: text/plain; charset=UTF-8
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---
 ...3\354\235\200 \354\210\230\354\227\264.md" | 41 +++++++++++++++++++
 1 file changed, 41 insertions(+)
 create mode 100644 "JHLEE325/202511/10 BOJ G4 \354\242\213\354\235\200 \354\210\230\354\227\264.md"

diff --git "a/JHLEE325/202511/10 BOJ G4 \354\242\213\354\235\200 \354\210\230\354\227\264.md" "b/JHLEE325/202511/10 BOJ G4 \354\242\213\354\235\200 \354\210\230\354\227\264.md"
new file mode 100644
index 00000000..f22c2ce7
--- /dev/null
+++ "b/JHLEE325/202511/10 BOJ G4 \354\242\213\354\235\200 \354\210\230\354\227\264.md"	
@@ -0,0 +1,41 @@
+```java
+import java.io.*;
+public class Main {
+    static int N;
+    static boolean found = false;
+
+    public static void main(String[] args) throws IOException {
+        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
+        N = Integer.parseInt(br.readLine().trim());
+        dfs("", 0);
+    }
+
+    static void dfs(String s, int depth) {
+        if (found) return;
+        if (depth == N) {
+            System.out.println(s);
+            found = true;
+            return;
+        }
+        for (int i = 1; i <= 3; i++) {
+            String ns = s + i;
+            if (goodString(ns)) {
+                dfs(ns, depth + 1);
+            }
+            if (found) return;
+        }
+    }
+
+    static boolean goodString(String s) {
+        int len = s.length();
+        for (int l = 1; l <= len / 2; l++) {
+            String a = s.substring(len - 2*l, len - l);
+            String b = s.substring(len - l, len);
+            if (a.equals(b)) {
+                return false;
+            }
+        }
+        return true;
+    }
+}
+```