#include <cstdio>
#include <cctype>

const int LMAX = 100005;

char input[LMAX];
char *p = input;

int eval_add();
int eval_mul();
int eval_par();

int eval_add() {
	int result = eval_mul();

	while (*p == '+' || *p == '-')
		if (*p == '+')
			p++, result += eval_mul();
		else
			p++, result -= eval_mul();

	return result;
}

int eval_mul() {
	int result = eval_par();

	while (*p == '*' || *p == '/')
		if (*p == '*')
			p++, result *= eval_par();
		else
			p++, result /= eval_par();

	return result;
}

int eval_par() {
	int result = 0;

	if (*p == '(')
		p++, result = eval_add(), p++;
	else
		while (isdigit(*p))
			result = result * 10 + (*p - '0'), p++;

    return result;
}

int main() {
	freopen("evaluare.in", "r", stdin);
	freopen("evaluare.out", "w", stdout);

    fgets(input, LMAX, stdin);
	printf("%d\n", eval_add());

    return 0;
}