#include <fstream>
#include <string>
#include <cctype>
using namespace std;
ifstream in("evaluare.in");
ofstream out("evaluare.out");
string s;
int i,n;
int termen();
int eval();
int factor();
int number()
{
    int ans=0;
    while(i<n  &&  isdigit(s[i]))
    {
        ans=ans*10+s[i]-'0';
        i++;
    }
    return ans;
}
int eval()
{
    int ans=termen();
    while(i<n  &&  (s[i]=='+'  ||  s[i]=='-'))
    {
        if(s[i]=='+')
        {
            i++;
            ans+=termen();
        }
        else if(s[i]=='-')
        {
            i++;
            ans-=termen();
        }
    }
    return ans;
}
int termen()
{
    int ans=factor();
    while(i<n  && (s[i]=='*'  ||  s[i]=='/'))
    {
        if(s[i]=='*')
        {
            i++;
            ans*=factor();
        }
        else if(s[i]=='/')
        {
            i++;
            ans/=factor();
        }
    }
    return ans;
}
int factor()
{
    int ans;
    if(s[i]=='(')
    {
        i++;
        ans=eval();
        i++;
    }
    else
    {
        ans=number();
    }
    return ans;
}
int main()
{
    in>>s;
    n=s.size();
    out<<eval();
    return 0;
}