結果
問題 | No.424 立体迷路 |
ユーザー |
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提出日時 | 2022-08-10 15:53:20 |
言語 | Java (openjdk 23) |
結果 |
AC
|
実行時間 | 84 ms / 2,000 ms |
コード長 | 2,730 bytes |
コンパイル時間 | 4,025 ms |
コンパイル使用メモリ | 78,920 KB |
実行使用メモリ | 51,220 KB |
最終ジャッジ日時 | 2024-09-21 02:36:46 |
合計ジャッジ時間 | 5,345 ms |
ジャッジサーバーID (参考情報) |
judge1 / judge4 |
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ファイルパターン | 結果 |
---|---|
sample | AC * 5 |
other | AC * 21 |
ソースコード
import java.io.*;import java.util.*;public class Main {public static void main(String[] args) throws Exception {Scanner sc = new Scanner();int h = sc.nextInt();int w = sc.nextInt();int start = (sc.nextInt() - 1) * w + sc.nextInt() - 1;int goal = (sc.nextInt() - 1) * w + sc.nextInt() - 1;ArrayList<ArrayList<Integer>> graph = new ArrayList<>();char[][] field = new char[h][];for (int i = 0; i < h; i++) {field[i] = sc.next().toCharArray();for (int j = 0; j < w; j++) {graph.add(new ArrayList<>());if (i > 0 && Math.abs(field[i][j] - field[i - 1][j]) <= 1) {graph.get(i * w + j).add((i - 1) * w + j);graph.get((i - 1) * w + j).add(i * w + j);}if (i > 1 && field[i][j] == field[i - 2][j] && field[i][j] > field[i - 1][j]) {graph.get(i * w + j).add((i - 2) * w + j);graph.get((i - 2) * w + j).add(i * w + j);}if (j > 0 && Math.abs(field[i][j] - field[i][j - 1]) <= 1) {graph.get(i * w + j).add(i * w + j - 1);graph.get(i * w + j - 1).add(i * w + j);}if (j > 1 && field[i][j] == field[i][j - 2] && field[i][j] > field[i][j - 1]) {graph.get(i * w + j).add(i * w + j - 2);graph.get(i * w + j - 2).add(i * w + j);}}}ArrayDeque<Integer> deq = new ArrayDeque<>();deq.add(start);boolean[] visited = new boolean[h * w];while (deq.size() > 0) {int x = deq.poll();if (visited[x]) {continue;}visited[x] = true;deq.addAll(graph.get(x));}if (visited[goal]) {System.out.println("YES");} else {System.out.println("NO");}}}class Scanner {BufferedReader br = new BufferedReader(new InputStreamReader(System.in));StringTokenizer st = new StringTokenizer("");public Scanner() throws Exception {}public int nextInt() throws Exception {return Integer.parseInt(next());}public long nextLong() throws Exception {return Long.parseLong(next());}public double nextDouble() throws Exception {return Double.parseDouble(next());}public String next() throws Exception {while (!st.hasMoreTokens()) {st = new StringTokenizer(br.readLine());}return st.nextToken();}}