import java.text.NumberFormat;
import java.util.Locale;
import java.util.Scanner;

public class Main {

	public static void main(String[] args) {

		Scanner sc = new Scanner(System.in);
		int n = sc.nextInt();

		Locale japan = new Locale("ja", "JP");
		NumberFormat nfjp = NumberFormat.getInstance(japan);

		System.out.println(nfjp.format(n));

	}

}