#include <fstream>

using namespace std;

char s[100005];
int p;

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 (s[p] == '+' || s[p] == '-')
        if (s[p] == '+')
            ++p,
            r += termen();
        else
            ++p,
            r -= termen();
    return r;
}

int termen(){
    int r = factor();
    while (s[p] == '*' || s[p] == '/')
        if (s[p] == '*')
            ++p,
            r *= factor();
        else
            ++p,
            r /= factor();
    return r;
}

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