#include <iostream>
#include <fstream>
using namespace std;
ifstream fin("evaluare.in");
ofstream fout("evaluare.out");
void citire(char s[1000010])
{
    fin.getline(s,1000010);
}
char j[1000010],i=0;
int anamere();
int inmultire();
int rezolv()
{
    int p=inmultire();
    while (j[i]=='+' || j[i]=='-')
    {
        if (j[i]=='+')
        {
            i++;
            p+=inmultire();
        }
        else
        {
            i++;
            p-=inmultire();
        }
    }
    return p;
}
int inmultire()
{
    int p=anamere();
    while(j[i]=='*' || j[i]=='/')
    {
        if(j[i]=='*')
        {
            i++;
            p*=anamere();
        }
        else
        {
            i++;
            p/=anamere();
        }
    }
    return p;
}
int anamere()
{
    int p=0;
    if (j[i]=='('){
            i++;
            p=rezolv();
            i++;
        }
    else while (isdigit(j[i])) p=p*10+j[i++]-'0';
    return p;
}
int main()
{
    citire(j);
    fout<<rezolv();
    return 0;
}