#include <fstream>
using namespace std;
ifstream cin("evaluare.in");
ofstream cout("evaluare.out");
char s[100001];
int i;
int expresie();
int termen();
int factor();
int constanta();
int main()
{
    cin >> s;
    cout << expresie();
}
int expresie()
{
    int r = termen();
    while(s[i] == '+' || s[i] == '-')
    {
        if(s[i] == '+')
        {
            i++;
            r += termen();
        }
        else if(s[i] == '-')
        {
            i++;
            r -= termen();
        }
    }
    return r;
}
int termen()
{
    int r = factor();
    while(s[i] == '*' || s[i] == '/')
    {
        if(s[i] == '*')
        {
            i++;
            r *= factor();
        }
        else if(s[i] == '/')
        {
            i++;
            r /= factor();
        }
    }
    return r;
}
int factor()
{
    int r = 0;
    if(s[i] == '(')
    {
        i++;
        r = expresie();
        i++;
    }
    else
    {
        r = constanta();
    }
    return r;
}
int constanta()
{
    int r = 0;
    while(isdigit(s[i]))
        r = r * 10 + (s[i] - '0'), i++;
    return r;
}