# include <cstdio>
# define MAXN 100013
using namespace std;

char *p,s[MAXN];

int eval();
int tm();
int factor();

int main()
{
    freopen("evaluare.in", "r", stdin);
    freopen("evaluare.out", "w", stdout);
    gets(s);
    p=s;
    printf("%d\n", eval());
    fclose(stdin);
    fclose(stdout);
    return 0;
}
int eval()
{
    int r=tm();
    while(*p=='+' || *p=='-')
    {
        if(*p=='+')
        {
            p++;
            r+=tm();
        }
        else if(*p=='-')
        {
            p++;
            r-=tm();
        }
    }
    return r;
}
int tm()
{
    int r=factor();
    while(*p=='*' || *p=='/')
    {
        if(*p=='*')
        {
            p++;
            r*=factor();
        }
        else if(*p=='/')
        {
            p++;
            r/=factor();
        }
    }
    return r;
}
int factor()
{
    int r=0;
    if(*p=='(')
    {
        p++;
        r=eval();
        p++;
    }
    while(*p<='9' && *p>='0')
    {
        r*=10;
        r+=*p-'0';
        p++;
    }
    return r;
}