#include <fstream>

using namespace std;

char s[100005], *p = s;

void read();
int eval();
int termen();
int factor();
void write();

int main(){
    read();
    write();
    return 0;
}

void read(){
    ifstream fin ("evaluare.in");
    fin >> s;
    fin.close();
}

void write(){
    ofstream fout ("evaluare.out");
    fout << eval();
    fout.close();
}

int eval(){
    int r = termen();
    while (*p == '+' || *p == '-')
        switch(*p){
            case '+':
                ++p;
                r += termen();
                break;
            case '-':
                ++p;
                r -= termen();
                break;
        }
    return r;
}

int termen(){
    int r = factor();
    while (*p == '*' || *p == '/')
        switch(*p){
            case '*':
                ++p;
                r *= factor();
                break;
            case '/':
                ++p;
                r /= factor();
                break;
        }
    return r;
}

int factor(){
    int r = 0;
    if (*p == '('){
        ++p;
        r = eval();
        ++p;
    }
    else {
        while (*p >= '0' && *p <= '9'){
            r = r * 10 + *p - '0';
            ++p;
        }
    }
    return r;
}