#include <fstream>
using namespace std;
ifstream f("evaluare.in");
ofstream g("evaluare.out");
char s[100001],*p;
int numar()
{
    int nr=0;
    while(*p>='0' && *p<='9')
    {
        nr=nr*10+*p-'0';
        p++;
    }
    return nr;
}
int termen();
int factor();
int expresie()
{
    int r=termen();
    while(*p=='+' || *p=='-')
        if(*p=='+')
    {
        p++;
        r+=termen();
    }
       else
        if(*p=='-')
       {
           p++;
           r-=termen();
       }
       return r;
}
int termen()
{
    int r=factor();
    while(*p=='*' || *p=='/')
    {
       switch(*p)
       {
        case '*':p++;
                 r*=factor();
                 break;
        case '/':p++;
                 r/=factor();
                 break;
       }
    }
    return r;
}
int factor()
{
    int r;
    if(*p=='(')
    {
        p++;
        r=expresie();
        p++;
    }
     else
            r=numar();
    return r;
}
int main()
{
    f.get(s,100001);
    p=s;
    g<<expresie();
    g.close();
    return 0;
}