#include <bits/stdc++.h>
using namespace std;
using ll = long long;
using vi  = vector<int>; using vb  = vector<bool>; using vd  = vector<double>; using vl  = vector<ll>;
using vvi = vector<vi>;  using vvb = vector<vb>;   using vvd = vector<vd>;     using vvl = vector<vl>;

#define REP(i,n) for(ll i=0; i<(n); ++i)
#define FOR(i,b,n) for(ll i=(b); i<(n); ++i)
#define ALL(v) (v).begin(), (v).end()
#define TEN(x) ((ll)1e##x)

struct Node{
	ll size = 0;
	vector<Node> children;
};

int dx[] = { -1,  0,  0,  1,-1, 1, -1, 1 };
int dy[] = {  0, -1,  1,  0, 1, 1, -1,-1 };

bool contain(ll n, ll x) { return 0 <= x && x < n; }

void blank_dfs(const vvb & table, ll x, ll y, vvb & visited, vector<pair<ll, ll>> * discover) {
	ll n = table.size(); ll m = table[0].size();
	
	stack<pair<ll, ll>> st; st.push({ x, y });
	while (!st.empty()) {
		ll x = st.top().first; ll y = st.top().second; st.pop();
		if (visited[y][x]) continue;
		visited[y][x] = true;

		REP(i, 4) {
			ll nx = x + dx[i]; ll ny = y + dy[i];
			if (!contain(m, nx) || !contain(n, ny)) continue;
			if (visited[ny][nx]) continue;
			if (table[ny][nx]) {
				if(discover!=nullptr) discover->push_back({ nx, ny });
			} else st.push({ nx, ny });
		}
	}
}

Node ring_search(const vvb & table, ll x, ll y, vvb & visited);
void blank_search(const vvb & table, ll x, ll y, vvb & visited, vector<Node> & nodes) {
	vector<pair<ll, ll>> discover;
	blank_dfs(table, x, y, visited, &discover);

	for (auto pos : discover) {
		if (visited[pos.second][pos.first]) continue;
		nodes.emplace_back(ring_search(table, pos.first, pos.second, visited));
	}
}

ll ring_dfs(const vvb & table,ll x, ll y, vvb & visited) {
	ll n = table.size(); ll m = table[0].size();
	
	ll px = -1, py = -1, cnt = 0;
	while (true) {
		if (visited[y][x]) return cnt;
		visited[y][x] = true;

		REP(i, 8) {
			ll nx = x + dx[i]; ll ny = y + dy[i];
			if (!contain(m, nx) || !contain(n, ny)) continue;
			if (nx == px && ny == py) continue;
			if (table[ny][nx]) {
				cnt++;
				px = x; py = y; x = nx; y = ny;
				break;
			}
		}
	}
}


Node ring_search(const vvb & table, ll x, ll y, vvb & visited) {
	ll n = table.size(); ll m = table[0].size();
	Node node;
	node.size = ring_dfs(table, x, y, visited);
	REP(i, 8) {
		ll nx = x + dx[i]; ll ny = y + dy[i];
		if (!contain(m, nx) || !contain(n, ny)) continue;
		if (!visited[ny][nx] && !table[ny][nx]) {
			blank_search(table, nx, ny, visited, node.children);
			return node;
		}
	}
	return node;
}

pair<ll,ll> dfs(Node & node) {
	auto ans = make_pair(node.size, 0);
	for (auto&& child : node.children) {
		auto _ = dfs(child);
		ans.first += _.second;
		ans.second += max(_.first, _.second);
	}
	return ans;
}

int main() {
	cin.tie(0);
	ios_base::sync_with_stdio(false);
	ll n, m;
	cin >> n >> m;
	vvb table(n, vb(m));
	REP(i, n) REP(j, m) {
		char c; cin >> c;
		table[i][j] = c!='.';
	}

	vvb visited(n, vb(m, false));
	REP(y, n) {
		if (!visited[y][0] && !table[y][0]) blank_dfs(table, 0, y, visited, nullptr);
		if (!visited[y][m - 1] && !table[y][m - 1]) blank_dfs(table, m - 1, y, visited, nullptr);
	}
	REP(x, m) {
		if (!visited[0][x] && !table[0][x]) blank_dfs(table, x, 0, visited, nullptr);
		if (!visited[n - 1][x] && !table[n - 1][x]) blank_dfs(table, x, n - 1, visited, nullptr);
	}
	
	vector<Node> nodes;
	REP(y, n) REP(x, m){
		if (visited[y][x]) continue;
		nodes.emplace_back(ring_search(table, x, y, visited));
	}

	ll ans = 0;
	for (auto&& child : nodes) {
		auto _ = dfs(child);
		ans += max(_.first, _.second);
	}

	cout << ans << endl;

	return 0;
}