import math
import sys

def solve_plus (a, b, c):
  return (-b + math.sqrt(b*b - 4*a*c)) / (2*a)

def solve_minus (a, b, c):
  return (-b - math.sqrt(b*b - 4*a*c)) / (2*a)

def check (n):
  return n == math.ceil(n)

N = int(sys.stdin.readline())
result1 = solve_plus(1, 1, -2*N)
result2 = solve_plus(1, 1, -2*N)
if check(result1) or check(result2):
  print('YES')
  print( int(result1) if check(result1) else int(result2))
else:
  print('NO')