#include <iostream>
#include <fstream>
#include <stack>
#include <algorithm>
#include <string>
#include <queue>
#include <vector>
#include <map>

using namespace std;

ifstream fin("evaluare.in");
ofstream fout("evaluare.out");

string sir;

int poz;

int termen();
int factor();

int expr() {
	int val = termen();

	while (poz < sir.size()) {
		if (sir[poz] == '+') {
			poz++;
			val += termen();
		}
		else if (sir[poz] == '-') {
			poz++;
			val -= termen();
		}
		else break;
	}
	return val;
}

int termen() {
	int val = factor();

	while (poz < sir.size()) {
		if (sir[poz] == '*') {
			poz++;
			val *= factor();
		}
		else if (sir[poz] == '/') {
			poz++;
			val /= factor();
		}
		else break;
	}
	return val;
}

int factor() {
	int val = 0;

	if (sir[poz] == '(') {
		++poz;
		val = expr();
		++poz;
	}
	else {
		while (poz < sir.size() && '0' <= sir[poz] && sir[poz] <= '9') {
			val = val * 10 + int(sir[poz] - '0');
			++poz;
		}
	}
	return val;
}

int main() {

	fin >> sir;

	fout << expr();

	return 0;
}