#include <iostream>
#include <fstream>
#include <algorithm>

using namespace std;
ifstream fcin("evaluare.in");
ofstream fout("evaluare.out");

int n;
char s[1000001];
char *p=s;

long eval();
long termen();
long factor();

long eval()
{
    long r=termen();

    while (*p=='+' || *p=='-')
    {
        switch (*p)
        {
            case '+':
                ++p;
                r+=termen();
                break;
            case '-':
                ++p;
                r-=termen();
                break;
        }
    }

    return r;
}

long termen()
{
    long r=factor();

    while (*p=='*' || *p=='/')
    {
        switch (*p)
        {
            case '*':
                ++p;
                r*=factor();
                break;
            case '/':
                ++p;
                r/=factor();
                break;
        }
    }

    return r;
}

long factor()
{
    long r=0;

    if (*p=='(')
    {
        ++p;
        r=eval();
        ++p;
    }
    else
    {
        while ('0'<=*p && *p<='9')
        {
            r=r*10+*p-'0';
            ++p;
        }
    }

    return r;
}

int main()
{
    fcin.getline(s, 100001);
    fout<<eval();
}