From 88380406bcd0fed958ee689a0cc3a43af0bdd902 Mon Sep 17 00:00:00 2001
From: JHLEE325 <82587652+JHLEE325@users.noreply.github.com>
Date: Fri, 26 Sep 2025 08:35:00 +0900
Subject: [PATCH] =?UTF-8?q?[20250926]=20BOJ=20/=20G4=20/=20=EB=AF=B8?=
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---
 ...34\353\247\214\353\223\244\352\270\260.md" | 64 +++++++++++++++++++
 1 file changed, 64 insertions(+)
 create mode 100644 "JHLEE325/202509/26 BOJ G4 \353\257\270\353\241\234\353\247\214\353\223\244\352\270\260.md"

diff --git "a/JHLEE325/202509/26 BOJ G4 \353\257\270\353\241\234\353\247\214\353\223\244\352\270\260.md" "b/JHLEE325/202509/26 BOJ G4 \353\257\270\353\241\234\353\247\214\353\223\244\352\270\260.md"
new file mode 100644
index 00000000..8403138b
--- /dev/null
+++ "b/JHLEE325/202509/26 BOJ G4 \353\257\270\353\241\234\353\247\214\353\223\244\352\270\260.md"	
@@ -0,0 +1,64 @@
+```java
+import java.io.*;
+import java.util.*;
+
+public class Main {
+    static int n;
+    static int[][] map;
+    static int[][] dist;
+    static int[] dx = {1, -1, 0, 0};
+    static int[] dy = {0, 0, 1, -1};
+    static final int INF = 987654321;
+
+    static class Node {
+        int x, y;
+        Node(int x, int y) {
+            this.x = x;
+            this.y = y;
+        }
+    }
+
+    public static void main(String[] args) throws IOException {
+        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
+        n = Integer.parseInt(br.readLine());
+        map = new int[n][n];
+        dist = new int[n][n];
+
+        for (int i = 0; i < n; i++) {
+            String line = br.readLine();
+            for (int j = 0; j < n; j++) {
+                map[i][j] = line.charAt(j) - '0';
+                dist[i][j] = INF;
+            }
+        }
+
+        bfs();
+        System.out.println(dist[n - 1][n - 1]);
+    }
+
+    static void bfs() {
+        Deque<Node> dq = new ArrayDeque<>();
+        dist[0][0] = 0;
+        dq.add(new Node(0, 0));
+
+        while (!dq.isEmpty()) {
+            Node cur = dq.pollFirst();
+            int x = cur.x, y = cur.y;
+
+            for (int dir = 0; dir < 4; dir++) {
+                int nx = x + dx[dir];
+                int ny = y + dy[dir];
+                if (nx < 0 || ny < 0 || nx >= n || ny >= n) continue;
+
+                int cost = (map[nx][ny] == 0 ? 1 : 0);
+                if (dist[x][y] + cost < dist[nx][ny]) {
+                    dist[nx][ny] = dist[x][y] + cost;
+                    if (cost == 0) dq.addFirst(new Node(nx, ny));
+                    else dq.addLast(new Node(nx, ny));
+                }
+            }
+        }
+    }
+}
+
+```