#include <bits/stdc++.h>
#define NMAX 100001
using namespace std;
ifstream f ("evaluare.in") ;
ofstream g ("evaluare.out") ;

char s[NMAX] , *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 (isdigit(*p))
            {r = r * 10 + (*p - '0');
            p++ ;}
    }
    return r ;
}

int main()
{
    f.getline(s , 100001);
    p = s;
    g << eval() ;
}