import sys
input=lambda: sys.stdin.readline().rstrip()
n=int(input())
if int((8*n+1)**0.5)**2==8*n+1 and int((8*n+1)**0.5)%2==1:
  print("YES")
  print((int((8*n+1)**0.5)-1)//2)
else:
  print("NO")