#include <fstream>

using namespace std;
ifstream g("evaluare.in");
ofstream f("evaluare.out");
char NR[100005],*p;
int eval();
int termen();
int factor();
int eval()
{
    int rez=termen();
    while(*p=='+' || *p=='-')
    {
        if(*p=='+')
        {
            p++;
            rez+=termen();
        }
        else
        {
            p++;
            rez-=termen();
        }
    }
    return rez;
}
int termen()
{
    int rez=factor();
    while(*p=='*' || *p=='/')
    {
        if(*p=='*')
        {
            p++;
            rez*=factor();
        }
        else
        {
            p++;
            rez/=factor();
        }
    }
    return rez;
}
int factor()
{
    int rez=0;
    if(*p=='(')
    {
        p++;
        rez=eval();
        p++;
    }
    else
    {
        while(*p>='0' && *p<='9')
        {
            rez=rez*10+(*p-'0');
            p++;
        }
    }
    return rez;
}
int main()
{
    g>>NR;
    f<<eval();
    return 0;
}