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43 lines
866 B
43 lines
866 B
#include <bits/stdc++.h>
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/*
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测试用例：
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4 4
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R R R X
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R X R X
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X X X R
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R X X X
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答案：
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3
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*/
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using namespace std;
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const int N = 110;
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int n, m;
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int ans;
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char g[N][N];
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int dx[] = {-1, 0, 1, 0}; //上右下左
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int dy[] = {0, 1, 0, -1}; //上右下左
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void dfs(int x, int y) {
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g[x][y] = 'X';
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for (int i = 0; i < 4; i++) {
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int tx = x + dx[i], ty = y + dy[i];
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if (tx < 1 || tx > n || ty < 1 || ty > m) continue;
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if (g[tx][ty] == 'R') dfs(tx, ty);
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}
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}
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int main() {
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cin >> n >> m;
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for (int i = 1; i <= n; i++)
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for (int j = 1; j <= m; j++)
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cin >> g[i][j];
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for (int i = 1; i <= n; i++)
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for (int j = 1; j <= m; j++)
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if (g[i][j] == 'R') {
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dfs(i, j);
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ans++;
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}
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cout << ans << endl;
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return 0;
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} |