def calculate(value: str, spec: bool = True) -> int:
	tmp = ""
	retu = 0
	sign = value[0] == "-"
	if sign or value[0] == "+":
		value = value[1:]
	for char in value:
		tmp2 = char == "-"
		if tmp2 or char == "+":
			retu += number(tmp, spec) * (1 - sign * 2)
			tmp = ""
			sign = tmp2
		else:
			tmp += char
	return retu + number(tmp, spec) * (1 - sign * 2)