#include <cstring>
#include <cstdio>
#include <cctype>
#define maxs 100005
using namespace std;

char s[maxs],*p;
int adunare();
int produs();
int numar();

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

int adunare()
{
    int val=produs();
    while (*p=='+' || *p=='-')
    {
        if (*p=='+')
        {
            ++p;
            val+=produs();
            continue;
        }
        if (*p=='-')
        {
            ++p;
            val-=produs();
            continue;
        }
        break;
    }
    return val;
}
int produs()
{
    int val=numar();
    while (*p=='*' || *p=='/')
    {
        if (*p=='*')
        {
            ++p;
            val*=numar();
            continue;
        }
        if (*p=='/')
        {
            ++p;
            val/=numar();
            continue;
        }
        break;
    }
    return val;
}
int numar()
{
    int val=0;
    if (*p=='(')
    {
        ++p;
        val+=adunare();
        ++p;
    }
    else
    {
        while (isdigit(*p))
        {
            val=val*10+*p-'0';
            ++p;
        }
    }
    return val;
}