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

int lg;
char s[100010],*p;

int eval();
int term();
int fact();

int eval()
{
    int r;
    r=term();
    while (*p=='+' || *p=='-')
    {
        if (*p=='+')
        {
            p++;
            r+=term();
        }
        else
        {
            p++;
            r-=term();
        }
    }
    return r;
}

int term()
{
    int r;
    r=fact();
    while (*p=='*' || *p=='/')
    {
        if (*p=='*')
        {
            p++;
            r*=fact();
        }
        else
        {
            p++;
            r/=fact();
        }
    }
    return r;
}

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

int main()
{
    cin>>s;
    p=s;
    cout<<eval();
}