#include <fstream>
#include <cstring>

using namespace std;

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

char s[100002];
int i;

int termen();
int factor();
int calc()
{
    int x = termen();
    while(s[i] == '+' || s[i] == '-')
    {
        if(s[i] == '+')
        {
            i ++;
            x += termen();
        }
        else
        {
            i ++;
            x -= termen();
        }
    }
    i ++;
    return x;
}
int termen()
{
    int x = factor();
    while(s[i] == '*' || s[i] == '/')
    {
        if(s[i] == '*')
        {
            i ++;
            x *= factor();
        }
        else
        {
            i ++;
            x /= factor();
        }
    }
    return x;
}
int factor()
{
    int x = 0;
    if(s[i] == '(')
    {
        i ++;
        return calc();
    }
    else
    {
        while(s[i] >= '0' && s[i] <= '9')
        {
            x = x * 10 + s[i] - '0';
            i ++;
        }
        return x;
    }
}
int main()
{
    f.getline(s, sizeof(s));
    g << calc();
    return 0;
}