0pts,闭关。

#include <bits/stdc++.h>
using namespace std;

/*你已经入以及战备状态，加油伞兵*/
int main() {
	int n, m;
	cin >> n >> m;
	string a[n][m];
	for (int i = 0; i < n; i++) {
		for (int j = 0; j < m; j++) {
			cin >> a[i][j];
		}
	}
	int cnt = 0;
	for (int i = 0; i < n; i++) {
		for (int j = 0; j < m; j++) {
			if (a[i][j] != "#" && a[i][j + 1] != "#" && a[i + 1][j] != "#" && a[i + 1][j + 1] != "#") {
				cnt++;
			}
		}
	}
	cout << cnt << endl;

	return 0;
}