#include <fstream>
using namespace std;
ifstream fin ("evaluare.in");
ofstream fout ("evaluare.out");

int expreseie();
int termen ();
int factor ();

int i;
char s[100001];

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


}

int termen () {
    int 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]-'0';
            i++;
        }
    }
    return r;
}

int main () {

    fin>>s;

    fout<<expresie();

    return 0;
}