//SursaDeRepetat
#include <bits/stdc++.h>
#define ll long long
using namespace std ;
ifstream f ("evaluare.in") ;
ofstream g ("evaluare.out") ;
char s[100003] , *p;
ll eval() ;
ll termen() ;
ll factor() ;

ll eval()
{
    ll r = termen() ;
    while (*p == '+' || *p == '-')
    {
        if (*p == '+')
        {
         p ++ ;
         r += termen() ;
        }
        if (*p == '-')
        {
            p ++ ;
            r -= termen() ;
        }
    }
    return r;
}
ll termen()
{
    ll r = factor() ;
    while (*p == '*' || *p == '/')
    {
    if (*p == '*')
    {
    p ++ ;
    r *= factor() ;
    }
    if (*p == '/')
    {
     p ++ ;
     r /= factor() ;
    }
    }
    return r ;
}
ll factor()
{
    ll r = 0;
    if (*p == '(')
    {
    p ++ ;
    r = eval();
    p ++ ;
    }
    else
    {
        while (isdigit(*p))
        {
        r = r * 10 + (*p - '0');
        p ++ ;
        }
    }
    return r;
}
int main()
{
    f >> s;
    p = s;
    g << eval() << '\n';
    f.close() ;
    g.close();
    return 0;
}