#include <cstdio>
#define NMAX 100000
using namespace std;

int eval();
int termen();
int factor();
int sol;
char s[NMAX+5],*p;

int main()
{
    freopen("evaluare.in","r",stdin);
    freopen("evaluare.out","w",stdout);
    gets(s);
    p=s;
    sol=eval();
    printf("%d\n",sol);
    return 0;
}

int eval()
{
    int r;
    r=termen();
    while(*p=='+' || *p=='-')
    {
        if(*p=='+')
        {
            ++p;
            r+=termen();
        }
        else
        {
            ++p;
            r-=termen();
        }
    }
    return r;
}

int termen()
{
    int r;
    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;
}