#include <fstream>
#include <cstring>
using namespace std;
ifstream f("evaluare.in");
ofstream g("evaluare.out");
int n;
char s[10000],*p;
int eval();
int termen();
int factor();
int main()
{
    f.get(s,10000);
    p=s;
    n=eval();
    g<<n;
}
int eval()
{
    int r;
    r=termen();
    while(*p=='+'||*p=='-')
    {
        if (*p=='+')
        {
            *p++;
            r+=termen();
        }
        else
        {
            *p++;
            r-=termen();
        }
    }
    return r;
}
int termen()
{
    int r;
    r=factor();
    while(*p=='*'||*p=='/')
    {
        if (*p=='*')
        {
            *p++;
            r*=factor();
        }
        else
        {
            *p++;
            r/=factor();
        }
    }
    return r;
}
int factor()
{
    int r;
    r=0;
    if (*p=='(')
    {
        p++;
        r=eval();
        p++;
    }
    else
    {
        while('0'<=*p && *p<='9')
        {
            r*=10;
            r+=(int)*p-'0';
            ++p;
        }
    }
    return r;

}