#include <fstream>
#include <string.h>

using namespace std;

int CalculareExpresie();
int CalculareTermen();
int CalculareFactor();

char Sir[100005];
int N,i;

int CalculareFactor()
{
    int R;

    if(Sir[i]=='(')
    {
        i++;
        R=CalculareExpresie();
        i++;
    }//if
    else
    {
        R=0;
        while(Sir[i]>='0' and Sir[i]<='9')
        {
            R=R*10+(Sir[i]-'0');
            i++;
        }
    }//else
    return R;
}

int CalculareTermen()
{
    int R;

    R=CalculareFactor();
    while(i<N and (Sir[i]=='*' or Sir[i]=='/'))
        if(Sir[i]=='*')
        {
            i++;
            R=R*CalculareFactor();
        }
        else
        {
            i++;
            R=R/CalculareFactor();
        }
    return R;
}

int CalculareExpresie()
{
    int R;

    R=CalculareTermen();
    while(i<N and Sir[i]=='+' or Sir[i]=='-')
        if(Sir[i]=='+')
        {
            i++;
            R+=CalculareTermen();
        }//if
        else
        {
            i++;
            R-=CalculareTermen();
        }//else
    return R;
}

int main()
{
    ifstream fin("evaluare.in");
    ofstream fout("evaluare.out");

    fin.get(Sir,100001,'\n');
    N=strlen(Sir);
    fout<<CalculareExpresie();

    fin.close ();
    fout.close();
    return 0;
}