#include <fstream>
#include <cstring>

#define DIM 100001

char s[DIM];
int i = 0;

int expresion();
int term();
int factor();

int expresion()
{
    int r = term();
    while (s[i] == '+' || s[i] == '-')
    {
        if (s[i] == '+')
        {
            i++;
            r += term();
        }
        else
        {
            i++;
            r -= term();
        }
    }
    return r;
}

int term()
{
    int r = factor();
    while (s[i] == '*' || s[i] == '/')
    {
        if (s[i] == '*')
        {
            i++;
            r *= factor();
        }
        else
        {
            i++;
            r /= factor();
        }
    }
    return r;
}

int factor()
{
    int r{};
    if (s[i] == '(')
    {
        i++;
        r = expresion();
        i++;
    }
    else
    {
        while (s[i] >= '0' && s[i] <= '9')
        {
            r = r * 10 + (s[i] - '0');
            i++;
        }
    }
    return r;
}

int main()
{
    std::ifstream fin("evaluare.in");
    std::ofstream fout("evaluare.out");

    fin.get(s, DIM);
    fout << expresion();

    return 0;
}