#include <bits/stdc++.h>

using namespace std;
ifstream fin("evaluare.in");
ofstream fout("evaluare.out");
int i;
char s[1000005];
int expresie ();
int termen();
int numar ();
int factor ();
int main()
{
    fin>>s;
    i=0;
    fout<<expresie();
    return 0;
}
int expresie ()
{
    int r=termen();
    while (s[i]=='+' || s[i]=='-' )
    {
        if (s[i]=='+')
            {
                i++;
                r+=termen();
            }
        else
            {
                i++;
                r-=termen();
            }
        return r;
    }

}
int termen()
{
    int r=factor();
    while (s[i]=='*' || s[i]=='/' )
    {
        if (s[i]=='*')
            {
                i++;
                r*=termen();
            }
        else
            {
                i++;
                r/=termen();
            }
    }
    return r;
}
int numar ()
{
    int r=0;
    while (s[i]>='0' && s[i]<='9')
        {
            r=r*10+s[i]-'0';
            i++;
        }
    return r;
}
int factor ()
{
    int r;
    if (s[i]=='(')
        {
            i++;
            r=expresie();
            i++;
        }
    else r=numar();
    return r;
}