import java.io.IOException;
import java.io.PrintWriter;

import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

public class SimpleService extends HttpServlet {
	public void doGet(HttpServletRequest req, HttpServletResponse resp)
		throws IOException {
		resp.setContentType("text/xml");
		PrintWriter out = resp.getWriter();
		out.println(
			Integer.parseInt(
				req.getParameter("a")
					+ Integer.parseInt(req.getParameter("b"))));
	}
}