import java.io.BufferedReader; import java.io.Closeable; import java.io.IOException; import java.io.InputStream; import java.io.InputStreamReader; import java.io.PrintWriter; import java.util.ArrayList; import java.util.Arrays; import java.util.Collections; import java.util.Comparator; import java.util.HashMap; import java.util.HashSet; import java.util.LinkedList; import java.util.ListIterator; import java.util.Map.Entry; import java.util.PriorityQueue; import java.util.Scanner; import java.util.StringTokenizer; import java.util.TreeMap; import java.util.TreeSet; public class Main { public static void main(String[] args) throws IOException { try (Scanner sc = new Scanner(System.in)) { final long N = sc.nextLong(); final long sqrt = (long)(Math.sqrt(2 * N)); //System.out.println(sqrt + " " + (sqrt * (sqrt + 1) / 2)); if((sqrt) * (sqrt + 1) / 2 == N){ System.out.println("YES"); System.out.println(sqrt); return; } if((sqrt + 1) * (sqrt + 2) / 2 == N){ System.out.println("YES"); System.out.println(sqrt + 1); return; } } } public static class Scanner implements Closeable { private BufferedReader br; private StringTokenizer tok; public Scanner(InputStream is) throws IOException { br = new BufferedReader(new InputStreamReader(is)); } private void getLine() throws IOException { while (!hasNext()) { tok = new StringTokenizer(br.readLine()); } } private boolean hasNext() { return tok != null && tok.hasMoreTokens(); } public String next() throws IOException { getLine(); return tok.nextToken(); } public int nextInt() throws IOException { return Integer.parseInt(next()); } public long nextLong() throws IOException { return Long.parseLong(next()); } public double nextDouble() throws IOException { return Double.parseDouble(next()); } public int[] nextIntArray(int n) throws IOException { final int[] ret = new int[n]; for (int i = 0; i < n; i++) { ret[i] = this.nextInt(); } return ret; } public long[] nextLongArray(int n) throws IOException { final long[] ret = new long[n]; for (int i = 0; i < n; i++) { ret[i] = this.nextLong(); } return ret; } public void close() throws IOException { br.close(); } } }