#include <fstream>
#include<string>
using namespace std;
ifstream f("evaluare.in");
ofstream g("evaluare.out");
char s[100013],*p;
int n;
int eval();
int termen();
int factor();

int main()
{
    f.getline(s, 100000);
    p=s;
    n=eval();
    g<<n;
    return 0;
}
int eval()
{
    int r;
    r=termen();
    while(*p=='+' || *p=='-')
    {
        if(*p=='+')
            {p++;
            r+=termen();
            }
        else
        if(*p=='-')
            {p++;
            r-=termen();}
    }
    return r;
}
int termen()
{
    int r;
    r=factor();
    while(*p=='*' || *p=='/')
    {
        if(*p=='*')
            {p++;
            r*=factor();}
        else
        if(*p=='/')
            {p++;
            r/=factor();}
    }
    return r;
}
int factor()
{
    int r;
    r=0;
    if(*p=='(')
    {
        ++p;
        r=eval();
        ++p;
    }

    else
        while(*p>='0' && *p<='9')
        {
            r=r*10;
            r=r+(int)*p-'0';
            p++;
        }
    return r;
}