#include <fstream>
using namespace std;

ifstream f("evaluare.in");
ofstream g("evaluare.out");

char s[100010],*p=s;

long eval(),elem(),fact();

long eval() {
    long rez=elem();
    while(*p=='+'||*p=='-') {
        switch(*p) {
            case '+':
                p++;
                rez+=elem();
                break;
            case '-':
                p++;
                rez-=elem();
                break;
        }
    }
    return rez;
}

long elem() {
    long rez=fact();
    while(*p=='*'||*p=='/') {
        switch(*p) {
            case '*':
                p++;
                rez *= fact();
                break;
            case '/':
                p++;
                rez /= fact();
                break;
        }
    }
    return rez;
}

long fact() {
    long rez=0;
    if(*p=='(') {
        ++p;
        rez = eval();
        ++p;
    } else {
        while(*p>='0'&&*p<='9')
            rez=rez*10+*p-'0',++p;
    }
    return rez;
}

int main() {
    f>>s;
    g<<eval();
}