#include <fstream>
#include <cstring>
using namespace std;
ifstream f("evaluare.in");
ofstream g("evaluare.out");
char v[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=='/')
        if(*p=='*')
        {
            p++;
            r*=factor();
        }
        else if(*p=='/'){
            p++;
            r/=factor();
        }
    return r;
}

int factor()
{
    int r;
    if(*p=='(')
    {
        p++;
        r=expresie();
        p++;
    }
    else r=numar();
    return r;
}
int main()
{
    f.get(v, 100001);
    p=v;
    g<<expresie();
    g.close();
    return 0;
}