n = int(input())
if ((1+8*n)**0.5) % 1 != 0:
	ans = int((-1+(1+8*n)**0.5)//2) + 1
else:
	ans = int((-1+(1+8*n)**0.5)//2)
if ans >= 36000:
	print('NO')
else:
	print('YES')
	print(ans)