#include <fstream>
#include <string>

using namespace std;

ifstream fin("evaluare.in");
ofstream fout("evaluare.out");
string s;
int n, i;

int termen();
int factor();

int expresie() {
    int val = 0;
    val = termen();
    while (i < n && s[i] != ')') {
        if (s[i] == '+') {
            ++i;
            val += termen();
        }
        if (s[i] == '-') {
            ++i;
            val -= termen();
        }
    }
    return val;
}

int termen() {
    int val = 1;
    if (s[i] == '(') {
        ++i;
        val = expresie();
        ++i;
    } else {
        val = factor();
    }
    while (i < n && s[i] != '+' && s[i] != '-' && s[i] != ')') {
        if (s[i] == '*') {
            ++i;
            val *= factor();
        }
        if (s[i] == '/') {
            ++i;
            val /= factor();
        }
    }
    return val;
}

int factor() {
    int val = 0;
    if (s[i] == '(') {
        ++i;
        val = expresie();
        ++i;
    }
    while (i < n && s[i] >= '0' && s[i] <= '9') {
        val = val * 10 + (s[i] - '0');
        ++i;
    }
    return val;
}

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