#include <fstream>
using namespace std;

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

int eval();
int termen();
int factor();
char s[100050], *p;

int eval()
{
    int r;
    r = termen();
    while(*p == '+' || *p == '-')
    {
        if(*p == '+')
        {
            ++p;
            r += termen();
        }
        else
        {
            ++p;
            r-= termen();
        }
    }
    return r;
}

int termen()
{
    int r;
    r = factor();
    while(*p == '*' || *p == '/')
    {
        if(*p == '*')
        {
            ++p;
            r *= factor();
        }
        else
        {
            ++p;
            r /= factor();
        }
    }
    return r;
}

int factor()
{
    int r = 0;
    if(*p == '(')
    {
        ++p;
        r = eval();
        ++p;
    }
    else
    {
        while (*p >= '0' && *p <= '9')
        {
            r = r * 10 + int(*p)-'0';
            ++p;
        }
    }
    return r;
}

int main()
{
    f.getline(s, 100050);
    p = s;
    g << eval();
    return 0;
}