結果
| 問題 |
No.2412 YOU Grow Bigger!
|
| コンテスト | |
| ユーザー |
tenten
|
| 提出日時 | 2023-08-17 09:20:59 |
| 言語 | Java (openjdk 23) |
| 結果 |
WA
|
| 実行時間 | - |
| コード長 | 4,507 bytes |
| コンパイル時間 | 2,980 ms |
| コンパイル使用メモリ | 92,044 KB |
| 実行使用メモリ | 48,848 KB |
| 最終ジャッジ日時 | 2024-11-26 04:41:14 |
| 合計ジャッジ時間 | 9,106 ms |
|
ジャッジサーバーID (参考情報) |
judge4 / judge5 |
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| ファイルパターン | 結果 |
|---|---|
| sample | AC * 2 |
| other | AC * 27 WA * 2 |
ソースコード
import java.io.*;
import java.util.*;
import java.util.stream.*;
public class Main {
public static void main(String[] args) throws Exception {
Scanner sc = new Scanner();
int h = sc.nextInt();
int w = sc.nextInt();
char[][] field = new char[h][];
for (int i = 0; i < h; i++) {
field[i] = sc.next().toCharArray();
}
ArrayDeque<Integer> deq = new ArrayDeque<>();
boolean[][] visited = new boolean[h][w];
deq.add(w + 1);
while (deq.size() > 0) {
int x = deq.poll();
int r = x / w;
int c = x % w;
if (visited[r][c]) {
continue;
}
visited[r][c] = true;
boolean hasDef = false;
for (int i = -1; i <= 1 && !hasDef; i++) {
for (int j = -1; j <= 1 && !hasDef; j++) {
hasDef = (field[r + i][c + j] == '#');
}
}
if (hasDef) {
continue;
}
if (r > 1) {
deq.add(x - w);
}
if (r < h - 2) {
deq.add(x + w);
}
if (c > 1) {
deq.add(x - 1);
}
if (c < w - 2) {
deq.add(x + 1);
}
}
if (!visited[h - 2][w - 2]) {
System.out.println(0);
return;
}
for (int i = 0; i < h; i++) {
for (int j = 0; j < w; j++) {
if (i <= 2 && j <= 2) {
continue;
}
if (i >= h - 3 && j >= w - 3) {
continue;
}
if (field[i][j] == '#') {
continue;
}
field[i][j] = '#';
deq.add(w + 1);
for (boolean[] arr : visited) {
Arrays.fill(arr, false);
}
while (deq.size() > 0) {
int x = deq.poll();
int r = x / w;
int c = x % w;
if (visited[r][c]) {
continue;
}
visited[r][c] = true;
boolean hasDef = false;
for (int a = -1; a <= 1 && !hasDef; a++) {
for (int b = -1; b <= 1 && !hasDef; b++) {
hasDef = (field[r + a][c + b] == '#');
}
}
if (hasDef) {
continue;
}
if (r > 1) {
deq.add(x - w);
}
if (r < h - 2) {
deq.add(x + w);
}
if (c > 1) {
deq.add(x - 1);
}
if (c < w - 2) {
deq.add(x + 1);
}
}
if (!visited[h - 2][w - 2]) {
System.out.println(1);
return;
}
field[i][j] = '.';
}
}
System.out.println(2);
}
}
class Utilities {
static String arrayToLineString(Object[] arr) {
return Arrays.stream(arr).map(x -> x.toString()).collect(Collectors.joining("\n"));
}
static String arrayToLineString(int[] arr) {
return String.join("\n", Arrays.stream(arr).mapToObj(String::valueOf).toArray(String[]::new));
}
}
class Scanner {
BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
StringTokenizer st = new StringTokenizer("");
StringBuilder sb = new StringBuilder();
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 int[] nextIntArray() throws Exception {
return Stream.of(br.readLine().split(" ")).mapToInt(Integer::parseInt).toArray();
}
public String next() throws Exception {
while (!st.hasMoreTokens()) {
st = new StringTokenizer(br.readLine());
}
return st.nextToken();
}
}
tenten