import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;
import java.io.PrintWriter;
import java.io.StreamTokenizer;
import java.util.Scanner;

public class Test {
    public static void main(String[] args) throws IOException {
        new Test().solve();
    }

    private static Scanner s = new Scanner(System.in);
    static int n = 0;

    void solve() throws IOException {

        String input = null;
        String[] strArray = new String[30];

        while (true) {
            input = getString();

            if (input.equals("#")) {
                break;
            } else {
                saveItToArray(strArray, input);
            }
        }

        checkOutIdentical(strArray);

        System.out.println(n - 1);
    }

    private static String getString() throws IOException {

        String input;

        input = s.nextLine();
        return (input);
    }

    void saveItToArray(String[] strArray, String input) {
        boolean isDash = false;
        for (int i = 0; i < input.length(); i++) {
            if (input.charAt(i) == '-') {
                strArray[n++] = input.substring(0, i);
                strArray[n++] = input.substring(i + 1, input.length());

                isDash = true;
                break;
            } else {
                isDash = false;
            }
        }

        if (!isDash) {
            strArray[n++] = input;
        }

    }

    void checkOutIdentical(String[] strArray) {
        int count = 0;
        count = n;
        for (int i = 1; i < count; i++) {
            for (int j = i - 1; j >= 0; j--) {
                if (!strArray[i].equals(" ") && !strArray[j].equals(" ")
                        && strArray[i].equals(strArray[j])) {
                    strArray[i] = " ";
                    n--;
                }
            }
        }
    }

}