#include <fstream>
#include <iostream>
#include <string>
#include <cstring>
#include <complex>
#include <cmath>
#include <set>
#include <vector>
#include <map>
#include <queue>
#include <cstdio>
#include <stack>
#include <algorithm>
#include <list>
#include <ctime>
#include <cassert>
#include <iomanip>

using namespace std;

//```
#define ONLINE_JUDGE

const double epsilon = 1e-7;
#define LL long long
#define ULL unsigned long long 
#define MOD1 666013
#define MOD2 666019
#define base 73

typedef vector<int> vi;
typedef vector<long long> vl;
typedef vector<bool> vb;
typedef vector<vi> vvi;
typedef vector<vl> vvl;
typedef vector<double> vd;
typedef vector<string> vs;
typedef pair<int, int> ii;
typedef pair<long long, long long> ll;
typedef vector<ii> vii;
typedef vector<ll> vll;

#define all(V) V.begin(), V.end()
#define allr(V) V.rbegin(), V.rend()
#define for_c_it(container, it) for (auto it : container)
#define present(container, element) (container.find(element) != container.end()) 
#define sz(a) int((a).size()) 
#define pb push_back 
#define mp make_pair
#define zeroes(x) ((x ^ (x - 1)) & x)

char S[100001];

int getExpression(int &pos, int &lg);
int getTerm(int &pos, int &lg);
int getFact(int &pos, int &lg);
int getValue(int &pos, int &lg);

int main() {
#ifndef ONLINE_JUDGE
	freopen("input.txt", "r", stdin);
#else 
	freopen("evaluare.in", "r", stdin);
	freopen("evaluare.out", "w", stdout);
#endif

	int pos = 0, lg;
	scanf("%s", S);
	lg = strlen(S);
	
	printf("%d", getExpression(pos, lg));

	return 0;
}

int getExpression(int &pos, int &lg) {
	int value = getTerm(pos, lg);
	while(pos < lg && (S[pos] == '+' || S[pos] == '-')) {
		if (S[pos] == '+') {
			value += getTerm(++pos, lg);
		}
		else {
			value -= getTerm(++pos, lg);
		}	
	}	
	return value;
}

int getTerm(int &pos, int &lg) {
	int fact = getFact(pos, lg);
		while(pos < lg && (S[pos] == '*' || S[pos] == '/')) {
			if (S[pos] == '*') {
				fact *= getFact(++pos, lg);
			}
			else {
				fact /= getFact(++pos, lg);
			}	
		}
	return fact;
}

int getFact(int &pos, int &lg) {
	if (S[pos] == '(') {
		++pos;
		int value = getExpression(pos, lg);
		++pos;
		return value;
	}
	return getValue(pos, lg);
}

int getValue(int &pos, int &lg) {
	int value = 0, sg = 1;
	if (S[pos] == '-')  {
		sg = -1;
		++pos;
	}
	while(pos < lg && isdigit(S[pos])) {
		value = value * 10 + (S[pos] - '0');
		++pos;
	}
	return sg * value;
}