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BJ3184_μ.java
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BJ3184_μ.java
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package week25;
import java.io.*;
import java.util.*;
public class BJ3184_μ {
static int dr[] = { -1, 1, 0, 0 };
static int dc[] = { 0, 0, -1, 1 };
static char map[][];
static boolean visit[][];
static int R, C, sheep, wolf;
public static void main(String[] args) throws IOException {
BufferedReader in = new BufferedReader(new InputStreamReader(System.in));
StringTokenizer st = new StringTokenizer(in.readLine(), " ");
R = Integer.parseInt(st.nextToken());
C = Integer.parseInt(st.nextToken());
map = new char[R][C];
visit = new boolean[R][C];
// λ§λΉμ ꡬ쑰 μ
λ ₯
for (int i = 0; i < R; i++) {
map[i] = in.readLine().toCharArray();
}
// λλ λλ μμ΄ μλ μμ μ°ΎκΈ°
for (int i = 0; i < R; i++) {
for (int j = 0; j < C; j++) {
// μμ§ μΈμ μ μ΄λ©΄ μΈμ λΆμ΄κΈ°
if ((map[i][j] == 'v' || map[i][j] == 'o') && !visit[i][j]) {
fight(i, j, map[i][j] == 'v');
}
}
}
// μ΄μμλ μμ μμ λλμ μ μΆλ ₯
System.out.println(sheep + " " + wolf);
}
private static void fight(int sr, int sc, boolean isWolf) {
Queue<int[]> q = new LinkedList<int[]>();
int sCnt = isWolf ? 0 : 1, wCnt = isWolf ? 1 : 0, tmp[], r, c, row, col;
// μ
λ ₯ μμΉμμ νμ μμ
q.add(new int[] { sr, sc });
visit[sr][sc] = true;
while (!q.isEmpty()) {
tmp = q.poll();
r = tmp[0];
c = tmp[1];
// μν, μμ§μΌλ‘ νμ
for (int i = 0; i < 4; i++) {
row = r + dr[i];
col = c + dc[i];
if (row < 0 || row >= R || col < 0 || col >= C || visit[row][col]) {
continue;
}
// μκ³Ό λλμ μ μΈκΈ°
if (map[row][col] == 'o') {
sCnt++;
} else if (map[row][col] == 'v') {
wCnt++;
} else if (map[row][col] == '#') {
continue;
}
// λ°©λ¬Έ μ²λ¦¬ ν νμ λ£κΈ°
visit[row][col] = true;
q.add(new int[] { row, col });
}
}
// λ λ§μ΄ μλ μͺ½μ΄ μμμ λ¨μ
if (sCnt > wCnt) {
sheep += sCnt;
} else {
wolf += wCnt;
}
}
}