import java.text.DecimalFormat;
import java.text.DecimalFormatSymbols;
import java.text.NumberFormat;
import java.util.Locale;

// The main method must be in a class named "Main".
class Main {
    
  public static void main(String[] args) {
      
    NumberFormat nf = NumberFormat.getCurrencyInstance(new Locale("in", "ID"));
    DecimalFormatSymbols decimalFormatSymbols = ((DecimalFormat) nf).getDecimalFormatSymbols();
    decimalFormatSymbols.setCurrencySymbol("Rp. ");
    ((DecimalFormat) nf).setDecimalFormatSymbols(decimalFormatSymbols);
    System.out.println(nf.format(1000000000).trim());
    
  }
  
}