#include <bits/stdc++.h>
using namespace std;
#define MAX 100001
ifstream f("evaluare.in");
ofstream g("evaluare.out");
char s[MAX],*p=s;
long x;
long numar();
long fact();

long adsc()
{
    long   x=numar();
    while(*p=='+' or *p=='-')
    {
        switch (*p)
        {
        case '+':
            p++;
            x=x+numar();
            break;
        case '-':
            p++;
            x=x-numar();
            break;
        }
    }
    return x;
}


long numar()
{
    long x=fact();
    while(*p=='*' or *p=='/')
    {
        {
            switch (*p)
            {
            case '*':
                p++;
                x=x*fact();
                break;
            case '/':
                p++;
                x=x/fact();
                break;
            }
        }



    }
    return x;
}


long fact()
{
    x=0;
    if(*p=='(')
    {
        p++;
        x=adsc();
        p++;
    }
    else
    {
        while(*p<='9' and *p>='0')
        {
            x=x*10+(*p-'0');
            p++;
        }

    }
    return x;
}

int main()
{
    f.get(s,MAX);
    g<<adsc();

}