import sys
import math

n = int(input())
drn = 1 + ((n - 1) % 9)

triangular = math.sqrt(8 * n + 1)
if triangular.is_integer() and (drn == 1 or drn == 3 or drn == 6 or drn == 9):
    print(f"YES\n{(int(triangular)-1)//2}")
else:
    print("NO")