#include <iostream>
#include <fstream>

using namespace std;

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


char s[100002], *p;

int eval();
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 = r*10 + *p-'0';
            p++;
        }
    }
    return r;
}

int main()
{
    fin.getline(s, 100001);

    p = s;


    fout << eval();

    return 0;
}