[20260305] BOJ / G1 / 달이 차오른다, 가자. / 한종욱

Author: Ukj0ng

Ukj0ng/202603/05 BOJ G1 달이 차오른다, 가자..md

@@ -0,0 +1,110 @@
+```
+import java.io.*;
+
+import java.util.ArrayDeque;
+import java.util.Arrays;
+import java.util.Queue;
+import java.util.StringTokenizer;
+
+public class Main {
+    private static final BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
+    private static final BufferedWriter bw = new BufferedWriter(new OutputStreamWriter(System.out));
+    private static final int[] dx = {1, 0, -1, 0};
+    private static final int[] dy = {0, 1, 0, -1};
+    private static char[][] map;
+    private static boolean[][][][][][][][] visited;
+    private static int[] start;
+    private static int N, M;
+
+    public static void main(String[] args) throws IOException {
+        init();
+
+        int answer = BFS();
+
+        bw.write(answer + "\n");
+        bw.flush();
+        bw.close();
+        br.close();
+    }
+
+    private static void init() throws IOException {
+        StringTokenizer st = new StringTokenizer(br.readLine());
+        N = Integer.parseInt(st.nextToken());
+        M = Integer.parseInt(st.nextToken());
+
+        map = new char[N][M];
+        visited = new boolean[N][M][2][2][2][2][2][2];
+        start = new int[2];
+
+        for (int i = 0; i < N; i++) {
+            map[i] = br.readLine().toCharArray();
+            for (int j = 0; j < M; j++) {
+                if (map[i][j] == '0') {
+                    start[0] = i;
+                    start[1] = j;
+                }
+            }
+        }
+    }
+
+    private static int BFS() {
+        Queue<int[]> q = new ArrayDeque<>();
+        int result = 0;
+        visited[start[0]][start[1]][0][0][0][0][0][0] = true;
+        // 0: x, 1: y, 2: count, 3: a, 4: b, 5: c, 6: d, 7: e, 8: f
+        q.add(new int[]{start[0], start[1], 0, 0, 0, 0, 0, 0, 0});
+
+        while (!q.isEmpty()) {
+            int[] current = q.poll();
+
+            for (int i = 0; i < 4; i++) {
+                int nx = current[0] + dx[i];
+                int ny = current[1] + dy[i];
+
+                if (OOB(nx, ny) || map[nx][ny] == '#' || visited[nx][ny][current[3]][current[4]][current[5]][current[6]][current[7]][current[8]]) continue;
+                if ((map[nx][ny] == 'A' && current[3] == 1) || (map[nx][ny] == 'B' && current[4] == 1) || (map[nx][ny] == 'C' && current[5] == 1)
+                        || (map[nx][ny] == 'D' && current[6] == 1) || (map[nx][ny] == 'E' && current[7] == 1) || (map[nx][ny] == 'F' && current[8] == 1)) {
+                    visited[nx][ny][current[3]][current[4]][current[5]][current[6]][current[7]][current[8]] = true;
+                    q.add(new int[] {nx, ny, current[2]+1, current[3], current[4], current[5], current[6], current[7], current[8]});
+                }
+                if (map[nx][ny] == 'a') {
+                    visited[nx][ny][1][current[4]][current[5]][current[6]][current[7]][current[8]] = true;
+                    q.add(new int[] {nx, ny, current[2]+1, 1, current[4], current[5], current[6], current[7], current[8]});
+                } else if (map[nx][ny] == 'b') {
+                    visited[nx][ny][current[3]][1][current[5]][current[6]][current[7]][current[8]] = true;
+                    q.add(new int[]{nx, ny, current[2] + 1, current[3], 1, current[5], current[6], current[7], current[8]});
+                } else if (map[nx][ny] == 'c') {
+                    visited[nx][ny][current[3]][current[4]][1][current[6]][current[7]][current[8]] = true;
+                    q.add(new int[]{nx, ny, current[2] + 1, current[3], current[4], 1, current[6], current[7], current[8]});
+                } else if (map[nx][ny] == 'd') {
+                    visited[nx][ny][current[3]][current[4]][current[5]][1][current[7]][current[8]] = true;
+                    q.add(new int[]{nx, ny, current[2] + 1, current[3], current[4], current[5], 1, current[7], current[8]});
+                } else if (map[nx][ny] == 'e') {
+                    visited[nx][ny][current[3]][current[4]][current[5]][current[6]][1][current[8]] = true;
+                    q.add(new int[]{nx, ny, current[2] + 1, current[3], current[4], current[5], current[6], 1, current[8]});
+                } else if (map[nx][ny] == 'f') {
+                    visited[nx][ny][current[3]][current[4]][current[5]][current[6]][current[7]][1] = true;
+                    q.add(new int[]{nx, ny, current[2] + 1, current[3], current[4], current[5], current[6], current[7], 1});
+                }
+
+                if (map[nx][ny] == '0' || map[nx][ny] == '.') {
+                    visited[nx][ny][current[3]][current[4]][current[5]][current[6]][current[7]][current[8]] = true;
+                    q.add(new int[] {nx, ny, current[2]+1, current[3], current[4], current[5], current[6], current[7], current[8]});
+                }
+
+                if (map[nx][ny] == '1') {
+                    result = current[2]+1;
+                    return result;
+                }
+            }
+        }
+
+        return -1;
+    }
+
+    private static boolean OOB(int nx, int ny) {
+        return nx < 0 || nx > N-1 || ny < 0 || ny > M-1;
+    }
+
+}
+```