import java.util.Scanner;

public class No648 {
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		long n = sc.nextLong();
		if((Math.sqrt(8 * n + 1) - 1) % 2 == 0) {
			System.out.println("YES");
			System.out.println(((long)Math.sqrt(8 * n + 1) - 1) / 2);
		}else {
			System.out.println("NO");
		}
	}
}