import java.util.Scanner;

public class Task14 {

	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		int n = sc.nextInt();
		boolean checkN = (n >= 10 && n<= 200);
		if (!checkN) {
			System.out.println("Wrong Number");
		}else {
			for(int i = n -1;i>=0;i--) {
				if(i % 7 == 0) {
					System.out.println(i);
				}
			}
		}
	}

}