//#include <iostream>
#include <cstring>
#include <fstream>
using namespace std;

ifstream cin("abcdef.in");
ofstream cout("abcdef.out");

char s[20]="(", *p, ss[20];
int n;

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()
{

    cin.getline(ss, 100000);
    strcat(s, ss);
    n = strlen(s);
    s[n] = ')';
    s[n+1] = '\0';
    p = s;
    int x = eval();
    cout << x;
}