# -*- coding: utf-8 -*-

if __name__ == "__main__":
	n = int(input())
	N = 2*(10**18)
	sum_sheep = 0
	for i in range(1,N):
		sum_sheep += i
		if sum_sheep < n:
			continue
		elif sum_sheep == n:
			print("YES")
			print(i)
			exit()
		else:
			print("NO")
			exit()