#include <fstream>
#define DIM 100005

using namespace std;

ifstream fin  ("evaluare.in");
ofstream fout ("evaluare.out");

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

char s[DIM];
int i;

int main(){
    i = 0;
    fin >> s;
    fout << expresie();
    return 0;
}

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

int termen (){
    int r;
    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++;
        r = expresie();
        i++;
    }
    else{
        r = 0;
        while (s[i] >= '0' && s[i] <= '9'){
            r = r*10 + s[i] - 48;
            i++;
        }
    }
    return r;
}