import java.util.Scanner;

public class Main {

    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        long N = sc.nextLong();
        long ch = 0;
        boolean c = true;
            for (long i = 0;; i++) {
                ch += i;
                if (ch == N) {
                    ch = i;
                    break;
                } else if (ch > N) {
                    c = false;
                    break;
                }
            }
        if (c == true) {
            System.out.println("YES\n" + ch);
        } else {
            System.out.println("NO");
        }
    }
}