結果
問題 | No.5006 Hidden Maze |
ユーザー |
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提出日時 | 2022-06-12 16:29:00 |
言語 | Java (openjdk 23) |
結果 |
AC
|
実行時間 | 1,584 ms / 2,000 ms |
コード長 | 3,626 bytes |
コンパイル時間 | 2,082 ms |
実行使用メモリ | 83,136 KB |
スコア | 85,254 |
平均クエリ数 | 148.46 |
最終ジャッジ日時 | 2022-06-12 16:30:05 |
合計ジャッジ時間 | 49,858 ms |
ジャッジサーバーID (参考情報) |
judge10 / judge12 |
純コード判定しない問題か言語 |
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ファイルパターン | 結果 |
---|---|
other | AC * 100 |
ソースコード
import java.io.BufferedReader;import java.io.InputStreamReader;import java.util.ArrayDeque;import java.util.ArrayList;import java.util.Arrays;import java.util.Collections;import java.util.List;import java.util.Queue;public class Main {public static void main(String[] args) throws Exception {BufferedReader br = new BufferedReader(new InputStreamReader(System.in));String[] sa = br.readLine().split(" ");int h = Integer.parseInt(sa[0]);int w = Integer.parseInt(sa[1]);int p = Integer.parseInt(sa[2]);int h1 = h - 1;int w1 = w - 1;int q = 100 - p;int[] dx = {1, 0, -1, 0};int[] dy = {0, 1, 0, -1};double[][] tate = new double[h][w];double[][] yoko = new double[h][w];for (int i = 0; i < h; i++) {Arrays.fill(tate[i], 0.15);Arrays.fill(yoko[i], 0.15);}double border = 0.98;List<Integer> list = new ArrayList<>(4);for (int i = 0; i < 4; i++) {list.add(i);}while (true) {border = Math.min(border, 0.995);// 探索double[][] d = new double[h][w];int[][] pre = new int[h][w];for (int i = 0; i < h; i++) {Arrays.fill(d[i], 1e9);Arrays.fill(pre[i], -1);}d[0][0] = 0;Queue<Node> que = new ArrayDeque<>();que.add(new Node(0, 0));while (!que.isEmpty()) {Node cur = que.poll();int cx = cur.v / w;int cy = cur.v % w;Collections.shuffle(list);for (int i : list) {int nx = cx + dx[i];int ny = cy + dy[i];if (nx < 0 || h <= nx || ny < 0 || w <= ny) {continue;}double wall = 0;if (i == 0) wall = yoko[cx][cy];else if (i == 1) wall = tate[cx][cy];else if (i == 2) wall = yoko[nx][ny];else if (i == 3) wall = tate[nx][ny];if (wall > border) {continue;}double alt = cur.d + 1 + wall * 2; // TODO 調整if (alt < d[nx][ny]) {que.add(new Node(nx * w + ny, alt));d[nx][ny] = alt;pre[nx][ny] = cur.v;}}}if (pre[h1][w1] == -1) {border += 0.002;continue;}// 出力StringBuilder sb = new StringBuilder();int pos = h1 * w + w1;while (pos != 0) {int cx = pos / w;int cy = pos % w;int np = pre[cx][cy];int nx = np / w;int ny = np % w;if (nx < cx) sb.append('D');else if (ny < cy) sb.append('R');else if (nx > cx) sb.append('U');else if (ny > cy) sb.append('L');else throw new RuntimeException();pos = np;}sb.reverse();System.out.println(sb.toString());// 入力int a = Integer.parseInt(br.readLine());if (a == -1) {return;}// 壁更新int cx = 0;int cy = 0;for (int i = 0; i < a; i++) {char c = sb.charAt(i);if (c == 'D') {yoko[cx][cy] = 0;cx++;} else if (c == 'R') {tate[cx][cy] = 0;cy++;} else if (c == 'U') {cx--;yoko[cx][cy] = 0;} else if (c == 'L') {cy--;tate[cx][cy] = 0;}}char c = sb.charAt(a);if (c == 'D' && yoko[cx][cy] > 0.1) {yoko[cx][cy] += (1 - yoko[cx][cy]) * q / 100;} else if (c == 'R' && tate[cx][cy] > 0.1) {tate[cx][cy] += (1 - tate[cx][cy]) * q / 100;} else if (c == 'U' && yoko[cx - 1][cy] > 0.1) {yoko[cx - 1][cy] += (1 - yoko[cx - 1][cy]) * q / 100;} else if (c == 'L' && tate[cx][cy - 1] > 0.1) {tate[cx][cy - 1] += (1 - tate[cx][cy - 1]) * q / 100;}}}static class Node implements Comparable<Node> {int v;double d;public Node(int v, double d) {this.v = v;this.d = d;}public int compareTo(Node o) {return Double.compare(d, o.d);}}}