#include <fstream>
using namespace std;
ifstream fin("evaluare.in");
ofstream fout ("evaluare.out");
int expresie ();
int termen();
int factor();
int i;
char s[100010];
int main () {
    fin>>s;
    fout<<expresie();
    return 0;
}

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;

}