import java.util.regex.*;

public class CurrencyParser {
    public static double parseUSD(String html) {
        Pattern pattern = Pattern.compile(
                "<td>USD</td>\\s*" +
                        "<td>1</td>\\s*" +
                        "<td>Доллар США</td>\\s*" +
                        "<td>([0-9,]+)</td>",
                Pattern.DOTALL | Pattern.CASE_INSENSITIVE);

        Matcher matcher = pattern.matcher(html);

        if (matcher.find()) {
            String rateStr = matcher.group(1).replace(',', '.');
            try {
                return Double.parseDouble(rateStr);
            } catch (NumberFormatException e) {
                System.err.println("Ошибка парсинга числа: " + matcher.group(1));
            }
        }

        return -1;
    }
}