#include <fstream>
#include <string>
#include <vector>
#include <stack>

#define OPEN 1000000001
#define CLOSE 1000000002
#define STAR  1000000003
#define DIV  1000000004
#define PLUS 1000000005
#define MINUS 1000000006

using namespace std;
ifstream f("evaluare.in");
ofstream g("evaluare.out");

char akt;
vector<int> base, expr;

vector<int> format (const vector<int>& x)
{
    stack<int> temp;
    vector<int> kif;

    for (vector<int>::const_iterator i = x.begin(); i<x.end(); i++)
    {
        if (*i == OPEN) temp.push (OPEN);
        else if (*i == CLOSE)
        {
            while (temp.top() != OPEN)
            {
                kif.push_back(temp.top());
                temp.pop();
            }
            temp.pop();
        }
        else if (*i == PLUS)
        {
            while (temp.top() != OPEN)
            {
                kif.push_back(temp.top());
                temp.pop();
            }
            temp.push(PLUS);
        }
        else if (*i == MINUS)
        {
            while (temp.top() != OPEN)
            {
                kif.push_back(temp.top());
                temp.pop();
            }
            temp.push(MINUS);
        }
        else if (*i == STAR)
        {
            while (temp.top() != PLUS && temp.top() != MINUS && temp.top() != OPEN)
            {
                kif.push_back(temp.top());
                temp.pop();
            }
            temp.push(STAR);
        }
        else if (*i == DIV)
        {
            while (temp.top() != PLUS && temp.top() != MINUS && temp.top() != OPEN)
            {
                kif.push_back(temp.top());
                temp.pop();
            }
            temp.push(DIV);
        }
        else kif.push_back(*i);
    }

    return kif;
}

int evaluate (const vector<int>& x)
{
    stack<int> temp;
    int t = 0;
    for (vector<int>::const_iterator i = x.begin(); i<x.end(); i++)
    {
        if (*i == PLUS)
        {
            t = temp.top(); temp.pop();
            temp.top() += t;
        }
        else if (*i == MINUS)
        {
            t = temp.top(); temp.pop();
            temp.top() -= t;
        }
        else if (*i == STAR)
        {
            t = temp.top(); temp.pop();
            temp.top() *= t;
        }
        else if (*i == DIV)
        {
            t = temp.top(); temp.pop();
            temp.top() /= t;
        }
        else temp.push(*i);
    }
    return temp.top();
}

void write_vector (const vector<int>& temp)
{
    for (vector<int>::const_iterator i = temp.begin(); i<temp.end(); i++)
        if (*i == PLUS) g << '+';
        else if (*i == MINUS) g << '-';
        else if (*i == STAR) g << "*";
        else if (*i == DIV) g << "/";
        else g << *i << " ";
    g << "\n";
}

int main()
{
    base.push_back(OPEN);
    while(f >> akt)
    {
        if (akt == '(') base.push_back (OPEN);
        else if (akt == ')') base.push_back (CLOSE);
        else if (akt == '*') base.push_back (STAR);
        else if (akt == '/') base.push_back (DIV);
        else if (akt == '+') base.push_back (PLUS);
        else if (akt == '-') base.push_back (MINUS);
        else
        {
            base.push_back (akt-'0');
            while (f.peek()>= '0' && f.peek()< '10')
            {
                f >> akt;
                base[base.size()-1] = base.back() * 10 + akt - '0';
            }
        }
    }
    base.push_back(CLOSE);

    expr = format (base);

    //write_vector (expr);

    g << evaluate (expr);
}