#include<cstdio>
#include<cstring>

using namespace std;

char s[100014],*p;
int n;

int eval();

int termen();

int factor();

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

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

int termen()
{
    int r;
    r=factor();
    while (*p=='*'||*p=='/')
    {
        if (*p=='*')
        {
            ++p;
            r*=factor();
            break;
        }
        if (*p=='/')
        {
            ++p;
            r/=factor();
            break;
        }
    }
    return r;
}

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