結果

問題 No.402 最も海から遠い場所
ユーザー Grenache
提出日時 2016-07-23 00:12:32
言語 Java
(openjdk 23)
結果
AC  
実行時間 733 ms / 3,000 ms
コード長 2,585 bytes
コンパイル時間 3,925 ms
コンパイル使用メモリ 79,288 KB
実行使用メモリ 164,464 KB
最終ジャッジ日時 2024-11-06 13:57:54
合計ジャッジ時間 10,396 ms
ジャッジサーバーID
(参考情報)
judge1 / judge4
このコードへのチャレンジ
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ファイルパターン 結果
sample AC * 3
other AC * 19
権限があれば一括ダウンロードができます

ソースコード

diff #
プレゼンテーションモードにする

import java.io.*;
import java.util.*;
public class Main_yukicoder402 {
public static void main(String[] args) {
Scanner sc = new Scanner(System.in);
Printer pr = new Printer(System.out);
int[] dx = {1, 0, -1, 0};
int[] dy = {0, 1, 0, -1};
int h = sc.nextInt();
int w = sc.nextInt();
char[][] s = new char[h][];
int[][] ss = new int[h][w];
for (int i = 0; i < h; i++) {
s[i] = sc.next().toCharArray();
for (int j = 0; j < w; j++) {
if (s[i][j] == '#') {
ss[i][j] = 1;
}
}
}
int[][] sum = new int[h + 1][w + 1];
for (int i = 0; i < h; i++) {
for (int j = 0; j < w; j++) {
sum[i + 1][j + 1] = sum[i + 1][j] + ss[i][j];
}
}
for (int i = 0; i < h; i++) {
for (int j = 0; j < w; j++) {
sum[i + 1][j + 1] += sum[i][j + 1];
}
}
int max = 0;
for (int i = 0; i < h; i++) {
for (int j = 0; j < w; j++) {
if (s[i][j] != '#') {
continue;
}
for (int k = max; k <= Math.min(h, w); k++) {
if (i + k + 1 > h || j + k + 1 > w) {
break;
}
int tmp = sum[i + k + 1][j + k + 1] - sum[i + k + 1][j] - sum[i][j + k + 1] + sum[i][j];
if (tmp == (k + 1) * (k + 1)) {
max = Math.max(max, k);
} else {
break;
}
}
}
}
pr.println((max + 2) / 2);
pr.close();
sc.close();
}
@SuppressWarnings("unused")
private static class Scanner {
BufferedReader br;
Iterator<String> it;
Scanner (InputStream in) {
br = new BufferedReader(new InputStreamReader(in));
}
String next() throws RuntimeException {
try {
if (it == null || !it.hasNext()) {
// it = Arrays.asList(br.readLine().split(" ")).iterator();
it = Arrays.asList(br.readLine().split("\\p{javaWhitespace}+")).iterator();
}
return it.next();
} catch (IOException e) {
throw new IllegalStateException();
}
}
int nextInt() throws RuntimeException {
return Integer.parseInt(next());
}
long nextLong() throws RuntimeException {
return Long.parseLong(next());
}
float nextFloat() throws RuntimeException {
return Float.parseFloat(next());
}
double nextDouble() throws RuntimeException {
return Double.parseDouble(next());
}
void close() {
try {
br.close();
} catch (IOException e) {
// throw new IllegalStateException();
}
}
}
private static class Printer extends PrintWriter {
Printer(PrintStream out) {
super(out);
}
}
}
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