#include <bits/stdc++.h>

using namespace std;

int main() {
    int t, n;
    cin >> t;
    for(int x = 1; x <= t; ++x) {
        cin >> n;
        string field;
        cin >> field;
        int ans = 0;
        for(int i = 0; i < field.size(); ++i) {
            if(field[i] == '.') {
                ans++;
                i += 2;
            }
        }
        printf("Case %d: %d\n", x, ans);
    }
    return 0;
}