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

char s[100005];
int i = 0;

int num();
int mult();

int solve() {
    int t = mult();
    while (s[i] == '+' || s[i] == '-') {
        if (s[i] == '+') {
            i++;
            t += mult();
        }
        else {
            i++;
            t -= mult();
        }
    }
    return t;
}

int mult() {
    int t = num();
    while (s[i] == '*' || s[i] == '/') {
        if (s[i] == '*') {
            i++;
            t *= num();
        }
        else {
            i++;
            t /= num();
        }
    }
    return t;
}

int num() {
    int t = 0;
    if (s[i] == '(') {
        i++;
        t = solve();
        i++;
    }
    else {
        while (s[i] >= '0' && s[i] <= '9') {
            t = t*10 + (s[i] - '0');
            i++;
        }
    }
    return t;
}

int main() {
    ifstream f("evaluare.in");
    ofstream g("evaluare.out");
    f.getline(s, 100005);
    g << solve();
}