#include <iostream>
#include <fstream>
#include <cstring>
using namespace std;

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

const int DMAX = 100000;

char S[DMAX+1], *p = S;

int expresie();
int termen();
int factor();

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

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

int main()
{
    f.getline(S, DMAX+1);
    g << expresie();
    f.close();
    g.close();
    return 0;
}