#include <fstream>
#include <string>
using namespace std;
ifstream fin("evaluare.in");
ofstream fout("evaluare.out");
int i=0;
int expresie(string &s);
int termen(string &s);
int factor(string &s);
int numar(string &s);
int expresie(string &s)
{
    int ans=termen(s);
    while(s[i]=='+' || s[i]=='-')
    {
        if(s[i]=='+')
        {
            i++;
            ans=ans+termen(s);
        }
        if(s[i]=='-')
        {
            i++;
            ans=ans-termen(s);
        }
    }
    return ans;
}
int termen(string &s)
{
    int ans=factor(s);
    while(s[i]=='*' || s[i]=='/')
    {
        if(s[i]=='*')
        {
            i++;
            ans=ans*factor(s);
        }
        if(s[i]=='/')
        {
            i++;
            ans=ans/factor(s);
        }
    }
    return ans;
}
int factor(string &s)
{
    int ans;
    if(s[i]=='(')
    {
        i++;
        ans=expresie(s);
        i++;
    }
    else
        ans=numar(s);
    return ans;
}
int numar(string &s)
{
    int ans=0;
    while(s[i]>='0' && s[i]<='9')
    {
        int cifra=s[i]-'0';
        ans=ans*10+cifra;
        i++;
    }
    return ans;
}
int main()
{
    string s;
    fin >> s;
    fout << expresie(s);
    return 0;
}