From 49bde452bd87eaf50fd0d2845e400156d2b5546b Mon Sep 17 00:00:00 2001
From: llIllIllIllIllIllIllIllI <_@seol.pro>
Date: Mon, 15 Dec 2025 23:47:43 +0900
Subject: [PATCH] =?UTF-8?q?[20251215]=20BOJ=20/=20G5=20/=20=EB=84=B4?=
 =?UTF-8?q?=EB=AA=A8=EB=84=B4=EB=AA=A8=20(Easy)=20/=20=EC=84=A4=EC=A7=84?=
 =?UTF-8?q?=EC=98=81?=
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---
 ...252\250\353\204\264\353\252\250 (Easy).md" | 42 +++++++++++++++++++
 1 file changed, 42 insertions(+)
 create mode 100644 "Seol-JY/202512/15 BOJ G5 \353\204\264\353\252\250\353\204\264\353\252\250 (Easy).md"

diff --git "a/Seol-JY/202512/15 BOJ G5 \353\204\264\353\252\250\353\204\264\353\252\250 (Easy).md" "b/Seol-JY/202512/15 BOJ G5 \353\204\264\353\252\250\353\204\264\353\252\250 (Easy).md"
new file mode 100644
index 00000000..e9d68430
--- /dev/null
+++ "b/Seol-JY/202512/15 BOJ G5 \353\204\264\353\252\250\353\204\264\353\252\250 (Easy).md"	
@@ -0,0 +1,42 @@
+```java
+import java.io.*;
+import java.util.*;
+
+public class Main {
+    static int N, M;
+    static boolean[][] grid;
+    static long count = 0;
+
+    public static void main(String[] args) throws IOException {
+        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
+        StringTokenizer st = new StringTokenizer(br.readLine());
+        N = Integer.parseInt(st.nextToken());
+        M = Integer.parseInt(st.nextToken());
+        grid = new boolean[N][M];
+        
+        backtrack(0);
+        System.out.println(count);
+    }
+
+    static void backtrack(int pos) {
+        if (pos == N * M) {
+            count++;
+            return;
+        }
+
+        int row = pos / M;
+        int col = pos % M;
+
+        grid[row][col] = false;
+        backtrack(pos + 1);
+
+        grid[row][col] = true;
+        if (row > 0 && col > 0 && grid[row-1][col] && grid[row][col-1] && grid[row-1][col-1]) {
+            grid[row][col] = false;
+            return;
+        }
+        backtrack(pos + 1);
+        grid[row][col] = false;
+    }
+}
+```