#include <fstream>
#define NMAX 100000
using namespace std;
ifstream fin ("evaluare.in");
ofstream fout ("evaluare.out");


int expresie();
int factor();
int termen();
char s[NMAX+3];
int i;

int expresie()
{
    int r=termen();
    while(s[i]=='+' || s[i]=='-')
    {
        i++;
        r+=termen();
    }
    return r;

}

int termen()
{
    int r=factor();
    while(s[i]=='*' || s[i]=='/')
    {
         if(s[i]=='*')
         {
             i++;
             r*=factor();
         }
         else
         {
             i++;
             r/=factor();
         }
    }
    return r;
}

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

    }
    return r;
}
int main()
{
    fin>>s;
    i=0;///cel care parcurge s-ul
    fout<<expresie();

}