#include <fstream>

using namespace std;

ifstream f("evaluare.in");
ofstream g("evaluare.out");
char s[100001];
int i;
int exp();
int termen();
int factor();
int exp()
{
    int r;
    r=termen();
    while(s[i]=='+' || s[i]=='-')
    {
        if(s[i]=='+')
        {
            ++i;
            r=r+termen();
        }
        else
        {
            i++;
            r=r-termen();
        }
    }
    return r;
}
int termen()
{

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