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

public class Main implements Runnable {

    final long MOD = 1 << 16;

    public void _main() throws IOException {
        while (true) {
            int n = nextInt();
            if (n == 0)
                break;
            long a = 1;
            long b = 0;
            for (int i = 0; i < n; i++) {
                String com = next();
                if (com.equals("ADD")) {
                    b += nextInt();
                    if (b >= MOD)
                        b -= MOD;
                }
                else {
                    int v = nextInt();
                    a = (a * v) % MOD;
                    b = (b * v) % MOD;
                }
            }
            boolean[] can = new boolean[(int)MOD];
            for (int x = 0; x < MOD; x++)
                can[(int)((a * x + b) % MOD)] = true;
            int res = 0;
            for (int i = 0; i < MOD; i++)
                if (can[i])
                    ++res;
            out.println(res);
        }
    }

    private BufferedReader in;
    private PrintWriter out;
    private StringTokenizer st;

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

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

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

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

    public static void main(String[] args) {
        new Thread(new Main()).start();
    }

    public void run() {
        try {
            in = new BufferedReader(new InputStreamReader(System.in));
            out = new PrintWriter(System.out);

            _main();

            out.close();
        } catch (Exception e) {
            e.printStackTrace();
            System.exit(202);
        }
    }

}