#include <iostream>
#include <vector>
#include <string>
using namespace std;

vector<string> sky;

void fill(int i, int j) {
    sky[i][j] = '+';
    for(int ii : {-1, 0, 1})
        for(int jj : {-1, 0, 1}) {
            if (ii*jj != 0 || ii==jj)
                continue;
            if (sky[i+ii][j+jj] == '-')
                fill(i+ii, j+jj);
        }
}

int main() {
    int m, n, t = 0;
    while (cin >> m >> n) {
        ++t;
        sky = vector<string>(m+2, string(n+2, '#'));
        for (int i = 0; i < m; ++i) {
            string s;
            cin >> s;
            sky[i+1] = "#" + s + "#";
        }
        int c = 0;
        for (int i = 1; i <= m; ++i)
            for (int j = 1; j <= n; ++j)
                if (sky[i][j] == '-') {
                    ++c;
                    fill(i, j);
                }
        cout << "Case " << t << ": " << c << endl;
    }
    return 0;
}