import java.io.OutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.PrintWriter;
import java.util.Scanner;

/**
 * Built using CHelper plug-in
 * Actual solution is at the top
 *
 * @author silviase
 */
public class Main {
    public static void main(String[] args) {
        InputStream inputStream = System.in;
        OutputStream outputStream = System.out;
        Scanner in = new Scanner(inputStream);
        PrintWriter out = new PrintWriter(outputStream);
        sheepSleep solver = new sheepSleep();
        solver.solve(1, in, out);
        out.close();
    }

    static class sheepSleep {
        public void solve(int testNumber, Scanner in, PrintWriter out) {

            long n = in.nextLong();

            long ng = -1;
            long ok = (int) 1e9;
            while (Math.abs(ok - ng) > 1) {
                long mid = (ok + ng) / 2;
                if (mid * (mid + 1) / 2 >= n) {
                    ok = mid;
                } else {
                    ng = mid;
                }
            }
            if (ok * (ok + 1) / 2 == n) {
                out.println("YES");
                out.println(ok);
            } else {
                out.println("NO");
            }


        }

    }
}