#include <cstdio>
#include <cstring>
#define nMax 100010

using namespace std;


char a[nMax];
int n;
int i;

int ord1();
int ord2();
int eval();

int ord1()
{
    int x = ord2();
    while (a[i] == '+' || a[i] == '-'){
        if (a[i] == '+'){
            ++ i;
            x += ord2 ();
        }
        if (a[i] == '-'){
            ++ i;
            x -= ord2 ();
        }
    }
    return x;
}

int ord2()
{
    int x = eval();
    while (a[i] == '*' || a[i] == '/'){
        if (a[i] == '*'){
            ++ i;
            x *= eval ();
        }
        if (a[i] == '/'){
            ++ i;
            x /= eval ();
        }
    }
    return x;
}

int eval()
{
    int x = 0;
    if (a[i] == '('){
        ++ i;
        x = ord1();
        ++ i;
        return x;
    }
    while (a[i] >= '0' && a[i] <= '9'){
        x = x * 10 + a[i] - '0';
        ++ i;
    }
    return x;
}

int main()
{
    freopen ("evaluare.in", "r", stdin);
    freopen ("evaluare.out", "w", stdout);
    gets (a);
    n = strlen (a);
    printf ("%d\n", ord1());

    return 0;
}