結果
| 問題 |
No.697 池の数はいくつか
|
| ユーザー |
|
| 提出日時 | 2018-06-09 17:09:04 |
| 言語 | Java (openjdk 23) |
| 結果 |
MLE
|
| 実行時間 | - |
| コード長 | 2,989 bytes |
| コンパイル時間 | 2,595 ms |
| コンパイル使用メモリ | 78,664 KB |
| 実行使用メモリ | 667,552 KB |
| 最終ジャッジ日時 | 2024-11-25 12:27:57 |
| 合計ジャッジ時間 | 12,299 ms |
|
ジャッジサーバーID (参考情報) |
judge2 / judge5 |
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| ファイルパターン | 結果 |
|---|---|
| sample | AC * 3 |
| other | AC * 30 MLE * 2 |
ソースコード
import java.io.IOException;
import java.io.InputStream;
import java.math.BigInteger;
import java.util.Arrays;
import java.util.NoSuchElementException;
import java.util.Scanner;
public class Main {
public static void main(String[] args) {
new Main().run();
}
void run() {
FastScanner sc = new FastScanner();
int H = sc.nextInt();
int W = sc.nextInt();
int[][] A = new int[H][W];
for (int i = 0; i < H; ++i) {
for (int j = 0; j < W; ++j) {
A[i][j] = sc.nextInt();
}
}
int col = -1;
for (int i = 0; i < H; ++i) {
for (int j = 0; j < W; ++j) {
if (A[i][j] != 1)
continue;
go(W, H, j, i, A, col);
--col;
}
}
System.out.println(-col - 1);
}
void go(int W, int H, int x, int y, int[][] A, int col) {
if (A[y][x] != 1)
return;
A[y][x] = col;
for (int dx = -1; dx <= 1; ++dx) {
for (int dy = -1; dy <= 1; ++dy) {
if (Math.abs(dx) + Math.abs(dy) != 1)
continue;
if (x + dx >= W || x + dx < 0 || y + dy >= H || y + dy < 0)
continue;
if (A[dy + y][dx + x] == 1) {
go(W, H, dx + x, dy + y, A, col);
}
}
}
}
class FastScanner {
private final InputStream in = System.in;
private final byte[] buffer = new byte[1024];
private int ptr = 0;
private int buflen = 0;
private boolean hasNextByte() {
if (ptr < buflen) {
return true;
} else {
ptr = 0;
try {
buflen = in.read(buffer);
} catch (IOException e) {
e.printStackTrace();
}
if (buflen <= 0) {
return false;
}
}
return true;
}
private int readByte() {
if (hasNextByte())
return buffer[ptr++];
else
return -1;
}
private boolean isPrintableChar(int c) {
return 33 <= c && c <= 126;
}
public boolean hasNext() {
while (hasNextByte() && !isPrintableChar(buffer[ptr]))
ptr++;
return hasNextByte();
}
public String next() {
if (!hasNext())
throw new NoSuchElementException();
StringBuilder sb = new StringBuilder();
int b = readByte();
while (isPrintableChar(b)) {
sb.appendCodePoint(b);
b = readByte();
}
return sb.toString();
}
public long nextLong() {
if (!hasNext())
throw new NoSuchElementException();
long n = 0;
boolean minus = false;
int b = readByte();
if (b == '-') {
minus = true;
b = readByte();
}
if (b < '0' || '9' < b) {
throw new NumberFormatException();
}
while (true) {
if ('0' <= b && b <= '9') {
n *= 10;
n += b - '0';
} else if (b == -1 || !isPrintableChar(b)) {
return minus ? -n : n;
} else {
throw new NumberFormatException();
}
b = readByte();
}
}
public int nextInt() {
long nl = nextLong();
if (nl < Integer.MIN_VALUE || nl > Integer.MAX_VALUE)
throw new NumberFormatException();
return (int) nl;
}
public double nextDouble() {
return Double.parseDouble(next());
}
}
void tr(Object... objects) {
System.out.println(Arrays.deepToString(objects));
}
}