#include <iostream>
#include <cstdio>
#include <cstring>
using namespace std;

int operatii1();
int operatii2();
int nr();
char s[100005],*p;

int main()
{
    freopen("evaluare.in","r",stdin);
    freopen("evaluare.out","w",stdout);
    fgets(s,100005,stdin);
    p=s;
    printf("%d",operatii1());
    return  0;
}

int operatii1()
{
    int val=operatii2();

    while (*p=='+' || *p=='-')
    {
        if (*p=='+')
        {
            ++p;
            val+=operatii2();
        }
        if (*p=='-')
        {
            ++p;
            val-=operatii2();
        }
    }
    return val;
}
int operatii2()
{
    int val= nr();

    while (*p=='*' || *p=='/')
    {
        if (*p=='*')
        {
            ++p;
            val*=nr();

        }
        if (*p=='/')
        {
            ++p;
            val/=nr();
        }
    }
    return val;
}
int nr()
{
    int val=0;
    if (*p=='(')
    {
        ++p;
        val+=operatii1();
        ++p;
    }
    else
    {
        int nr=0;
        while (isdigit(*p))
            {
                nr=nr*10+(*p-'0');
                ++p;
            }
        return nr;

    }
    return val;
}