#include <bits/stdc++.h>

using namespace std;

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

const int MAX_LEN = 100'000;

char s[MAX_LEN + 1];
int i;

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

int main() {
    f >> s;
    i = 0;
    g << expresie() << "\n";
    f.close();
    g.close();
    return 0;
}

int expresie() {
    int r = termen();
    while (s[i] == '+' || s[i] == '-') {
        if (s[i] == '+') {
            i++; /// sar peste plus
            r += termen();
        }
        else {
            i++; /// sar peste minus
            r -= termen();
        }
    }
    return r;
}

int termen() {
    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++; /// sar peste paranteza deschisa
        r = expresie();
        i++; /// sar peste paranteza inchisa
    }
    else
        r = constanta();
    return r;
}

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