#ifdef ONLINE_JUDGE
	#include <bits/stdc++.h>
#else
	#include <algorithm>
	#include <bitset>
	#include <cassert>
	#include <cmath>
	#include <cstdio>
	#include <cstdlib>
	#include <cstring>
	#include <iostream>
	#include <map>
	#include <set>
	#include <stack>
	#include <string>
	#include <utility>
	#include <vector>
	#include <queue>
#endif

using namespace std;

	// lambda : [] (int a, int b) -> bool { body return }
	// string r_str = R"(raw string)"

#define mp make_pair
#define mt make_tuple
#define eb emplace_back
#define pb push_back
#define LL long long
#define ULL unsigned long long
#define BASE 73
#define NMAX 10000
#define NMAX2 20001
#define MOD1 1000000007
#define ALL(V) (V).begin(), (V).end()
#define ALLR(V) (V).rbegin(), (V).rend()
#define CRLINE Duxar(__LINE__);
#define SHOWME(x) cerr << __LINE__ << ": " << #x << " = " << (x) << endl;
#define ENTER putchar('\n');

int dx4[] = {-1, 0, 1, 0};
int dy4[] = {0, 1, 0, -1};

int dx8[] = {-1, -1, 0, 1, 1, 1, 0, -1};
int dy8[] = {0, 1, 1, 1, 0, -1, -1, -1};

void Duxar(int _this_line) {
#ifndef ONLINE_JUDGE
	printf("\n . . . . . . . . . . . . . Passed line - %d\n", _this_line);
#endif
}

template <class T>
void ReadNo(T &_value) {
	T _sign = 1;
	char ch;
	_value = 0;
	while(!isdigit(ch = getchar())) {
		(ch == '-') && (_sign = -1);
	}
	do {
		_value = _value * 10 + (ch - '0');
	} while(isdigit(ch = getchar()));
	_value *= _sign;
}

string expression;
int lg_expression;

int ComputeExpression(string &expression, int &pos);
int GetTermen(string &expression, int &pos);
int GetNumber(string &expression, int &pos);

int main(){
	string file_input = "zzzzzzzz";
#ifdef INFOARENA
	freopen((file_input + ".in").c_str(), "r", stdin);
	freopen((file_input + ".out").c_str(), "w", stdout);
#else
#ifndef ONLINE_JUDGE
	freopen("input.cpp", "r", stdin);
#endif
#endif
	
	int pos = 0;
	
	cin >> expression;
	expression += ')';
	lg_expression = expression.length();
	
	cout << ComputeExpression(expression, pos); ENTER;
	
	return 0;
}

int ComputeExpression(string &expression, int &pos) {
	int s, t2, t1 = GetTermen(expression, pos);
	while (expression[pos] == '+' || expression[pos] == '-') {
		s = 0;
		if (expression[pos] == '+') {
			s = 1;
		}
		if (expression[pos] == '-') {
			s = 2;
		}
		++pos;
		t2 = GetTermen(expression, pos);
		if (s == 1) {
			t1 += t2;
		}
		if (s == 2) {
			t1 -= t2;
		}
	}
	++pos;
	return t1;
}

int GetTermen(string &expression, int &pos) {
	int s, n2, n1 = GetNumber(expression, pos);
	while (expression[pos] == '*' || expression[pos] == '/') {
		s = 0;
		if (expression[pos] == '*') {
			s = 1;
		}
		if (expression[pos] == '/') {
			s = 2;
		}
		++pos;
		n2 = GetNumber(expression, pos);
		if (s == 1) {
			n1 *= n2;
		}
		if (s == 2) {
			n1 /= n2;
		}
	}
	return n1;
}

int GetNumber(string &expression, int &pos) {
	if (expression[pos] == '(') {
		++pos;
		return ComputeExpression(expression, pos);
	}
	
	int ans = 0;
	while (isdigit(expression[pos])) {
		ans = ans * 10 + expression[pos] - '0';
		++pos;
	}
	return ans;
}