#include <bits/stdc++.h>
using namespace std;
using ll = long long;
using ull = unsigned long long;
#define EFC cin.tie(nullptr)->ios_base::sync_with_stdio(false)
int d1[5] = { 0, -1, 0, 1, 0 };
int d2[5] = { 0, 0, 1, 0, -1 };
const int mod = 666013;
const int INF = 100000000;
int d11[9] = { 0 , -1, -1, 0, 1, 1, 1, 0, -1 };
int d22[9] = { 0, 0, 1, 1, 1, 0, -1, -1, -1 };
int est[3] = { 0, -1, 0 };
int est1[3] = { 0, 0, 1 };
ifstream fin("evaluare.in");
ofstream fout("evaluare.out");


//----------------------------------

char s[100001], *p = s;

long t();
long f();

long e() {

	long r = t();
	while (*p == '+' || *p == '-') {
		if (*p == '+') {
			++p;
			r += t();
		}
		else if (*p == '-') {
			++p;
			r -= t();
		}
	}
	return r;
}

long t() {

	long r = f();
	while (*p == '*' || *p == '/') {
		if (*p == '*') {
			++p;
			r *= f();
		}
		else if (*p == '/') {
			++p;
			r /= f();
		}
	}
	return r;
}

long f() {

	long r = 0;
	if (*p == '(') {
		++p;
		r = e();
		++p;
	}
	else {
		while (*p >= '0' && *p <= '9') {
			r = r * 10 + *p - '0';
			++p;
		}
	}
	return r;
}

int main() {

	fin >> s;
	fout << e();
}