import parser.*;
import lexer.*;
import java.io.*;


class Main {

	public static void main(String[] args) {
		try {
			Lexer lexer = new Lexer(new PushbackReader(new InputStreamReader(System.in)));
			Parser parser = new Parser(lexer);
			parser.parse();
		} catch (Exception e) {
			System.err.println(e.getMessage());
		}
	}
}