#include <fstream>
#define VAL 100005

using namespace std;

ifstream fin("evaluare.in");
ofstream fout("evaluare.out");

int i;
char c[VAL];
char *P=c;

int evaluare();
int termen();
int factor();

int evaluare()
{
    int nr=termen();
    while (*P=='+' || *P=='-')
    {
        if (*P=='+')
        {
            P++;
            nr+=termen();
        }
        else
        {
            P++;
            nr-=termen();
        }
    }
    return nr;
}

int termen()
{
    int nr=factor();
    while (*P=='*' || *P=='/')
    {
        if (*P=='*')
        {
            P++;
            nr*=factor();
        }
        else
        {
            P++;
            nr/=factor();
        }
    }
    return nr;
}

int factor()
{
    int nr=0;
    if (*P=='(')
    {
        P++;
        nr=evaluare();
        P++;
    }
    while ('0'<=*P && *P<='9')
    {
        nr=nr*10+(*P)-'0';
        P++;
    }
    return nr;
}

int main()
{
    fin >> c;
    fout << evaluare() << '\n';
    fin.close();
    fout.close();
    return 0;
}