import java.io.*;
import java.util.*;

public class a {

    static FastReader in = new FastReader();
    static PrintWriter out = new PrintWriter(System.out);


    public static void main(String[] args) throws Exception {
        int tc = 1;
        while (true) {
            String s = in.next();
            if (s.charAt(0) == '-') {
                break;
            }
            int cnt = 0, ans = 0;
            for (int i = 0; i < s.length(); i++) {
                if (s.charAt(i) == '{') {
                    cnt++;
                } else {
                    cnt--;
                }
                if (cnt < 0) {
                    cnt = 1;
                    ans++;
                }
            }//for
            out.printf("%d. %d\n", tc++, ans + cnt / 2);
        }//while
        out.flush();
    }//psvm

    static class FastReader {

        BufferedReader br;
        StringTokenizer st;

        FastReader() {
            br = new BufferedReader(new InputStreamReader(System.in));
        }

        FastReader(File f) {
            try {
                br = new BufferedReader(new FileReader(f));
            } catch (FileNotFoundException x) {
                x.printStackTrace();
            }
        }

        String next() throws IOException {
            while (st == null || !st.hasMoreTokens()) {
                st = new StringTokenizer(br.readLine());
            }
            return st.nextToken();
        }

        String nextLine() throws IOException {
            return br.readLine();
        }

        int nextInt() throws IOException {
            return Integer.parseInt(next());
        }

        long nextLong() throws IOException {
            return Long.parseLong(next());
        }

        double nextDouble() throws IOException {
            return Double.parseDouble(next());
        }

        boolean hasNext() throws IOException {
            String s = br.readLine();
            if (s == null) {
                return false;
            }
            st = new StringTokenizer(s);
            return true;
        }
    }
}//class