import java.util.Scanner import scala.collection.Searching._ import scala.annotation.tailrec import scala.collection.mutable import scala.collection.immutable._ import scala.io.StdIn.readLine class IUnionFind(val size: Int) { private case class Node(var parent: Option[Int], var treeSize: Int) private val nodes = Array.fill[Node](size)(new Node(None, 1)) def union(t1: Int, t2: Int): IUnionFind = { if (t1 == t2) return this val root1 = root(t1) val root2 = root(t2) if (root1 == root2) return this val node1 = nodes(root1) val node2 = nodes(root2) if (node1.treeSize < node2.treeSize) { node1.parent = Some(t2) node2.treeSize += node1.treeSize } else { node2.parent = Some(t1) node1.treeSize += node2.treeSize } this } def connected(t1: Int, t2: Int): Boolean = t1 == t2 || root(t1) == root(t2) def root(t: Int): Int = nodes(t).parent match { case None => t case Some(p) => root(p) } } object Main { def solve(sc: => Scanner): Unit = { val N = sc.nextLong val ans = solve2(0, 1L << 32, N) if (ans._1) { println("YES") println(ans._2) } else { println("NO") } } def solve2(minV: Long, maxV: Long, N: Long): (Boolean, Long) = { if (minV + 2 > maxV) { (calc(minV) == N, minV) } else { val midV = (minV + maxV) / 2 if (calc(midV) <= N) { solve2(midV, maxV, N) } else { solve2(minV, midV, N) } } } def calc(v: Long): Long = (v + 1) * v / 2 def gcd(i: Long, j: Long): Long = { if (i < j) (gcd(j, i)) else (if (j == 0) (i) else (gcd(j, i % j))) } def main(args: Array[String]): Unit = { val sc: Scanner = new Scanner(System.in) solve(sc) } }