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 */ 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); TaskC solver = new TaskC(); solver.solve(1, in, out); out.close(); } static class TaskC { public void solve(int testNumber, Scanner in, PrintWriter out) { long n = in.nextLong(); long maxN = n; long minN = 0; long cn = -1; while ((maxN + minN) / 2 != cn) { cn = (maxN + minN) / 2; long sum = cn * (cn + 1) / 2; if (sum == n) { out.println("YES"); out.println(cn); return; } else if (sum > n) { maxN = cn; } else if (sum < n) { minN = cn; } } out.println("NO"); } } }