#include <vector>
#include <list>
#include <map>
#include <set>
#include <deque>
#include <queue>
#include <stack>
#include <bitset>
#include <algorithm>
#include <functional>
#include <numeric>
#include <utility>
#include <sstream>
#include <iostream>
#include <iomanip>
#include <cstdio>
#include <cmath>
#include <cstdlib>
#include <cctype>
#include <string>
#include <cstring>
#include <cstdio>
#include <cmath>
#include <cstdlib>
#include <ctime>
#include <fstream>
#include <iterator>
#include <random>
#include <assert.h>
using namespace std;

const string file = "evaluare";

const string infile = file + ".in";
const string outfile = file + ".out";

const int INF = 0x3f3f3f3f; 

//#define ONLINE_JUDGE

string A;
int i;
int N;

int expresie();
int termen();
int factor();

int expresie()
{
    int T = termen();
    while(i < N && (A[i] == '+' || A[i] == '-'))
    {
        char p = A[i++];
        int t = termen();
        if(p == '+')
        {
            T += t;
        }
        else
        {
            T -= t;
        }
    }
    return T;
}

int termen()
{
    int F = factor();
    while(i < N && (A[i] == '*' || A[i] == '/'))
    {
        char p = A[i++];
        int f = factor();
        if(p == '*')
        {
            F *= f;
        }
        else
        {
            F /= f;
        }
    }
    return F;
}

int factor()
{
    int E = 0;
    if(i < N && A[i] == '(')
    {
       i++;
       E = expresie();
       i++;
    }
    else while(i < N && '0' <= A[i] && A[i] <= '9')
    {
        E *= 10;
        E += A[i] - '0';
        i++;
    }
    return E;
}
int main()
{
#ifdef ONLINE_JUDGE
	ostream &fout = cout;
	istream &fin = cin;
#else
	fstream fin(infile.c_str(), ios::in);
	fstream fout(outfile.c_str(), ios::out);
#endif	

    fin >> A;
    N = A.length();
    i = 0;
    fout << expresie();

#ifdef ONLINE_JUDGE
#else
    fout.close();
	fin.close();
#endif
}