#include <cstdio>
#include <cstring>
using namespace std;
char s[100013],*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);
}
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;
    r=0;
    if (*p=='(')
    {
        p++;
        r=eval();
        p++;
    }
    else
    {
        while('0'<=*p && *p<='9')
        {
            r*=10;
            r+=(int)*p-'0';
            ++p;
        }
    }
    return r;

}