#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;
    i = 0;
    cout<<expresie();
}
int expresie() {
/**
apel al functiei care ne va extrage primul termen al
acestei expresii
**/
    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;
}