#include <fstream>


using namespace std;

char sir[100005];
char *p=sir;

int termen();
int factor();

int eval()
{
    int r=termen();

    while(*p=='+' || *p=='-')
    {
        if(*p=='+')
        {
            p++;
            r+=termen();
        }
        else
        {
            p++;
            r-=termen();
        }
    }

    return r;
}

int termen()
{
    int r=factor();

    while(*p=='*' || *p=='/')
    {
        if(*p=='*')
        {
            p++;
            r*=factor();
        }
        else
        {
            p++;
            r/=factor();
        }
    }

    return r;
}

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

    return r;
}
int main()
{
    ifstream fin("evaluare.in");
    ofstream fout("evaluare.out");

    fin.get(sir,100005);
    fout<<eval()<<'\n';

    fin.close();
    fout.close();
    return 0;
}