#include <iostream>
#include <fstream>
#include <cstring>

using namespace std;
ifstream fin("evaluare.in");
ofstream fout("evaluare.out");


const int MAX=1e5;
int sol,i,n;
char v[MAX+10];

int expresie();
int termen();
int factor();
int constanta();

int main()
{
    fin.getline(v,MAX+5);
    n=strlen(v);

    i=0;

     sol=expresie();

    fout<<sol;

    return 0;
}

int expresie()
{
    int r=termen();


    while ((v[i]=='+' || v[i]=='-') && i<n)
    {
        if (v[i]=='+')
        {
            i++;
            r+=termen();
        }
        else
        {
            i++;
            r-=termen();
        }
    }

    return r;
}

int termen()
{
    int r=factor();

    while ((v[i]=='*' || v[i]=='/') && i<n)
    {
        if (v[i]=='*')
        {
            i++;
            r*=factor();
        }
        else
        {
            i++;
            r/=factor();
        }
    }

    return r;
}

int factor()
{
    int r;
    if (v[i]=='(')
    {
        i++;
        r=expresie();
        i++;
    }
    else
        r=constanta();

    return r;
}

int constanta()
{
    int r=0;

    while (v[i]>='0' && v[i]<='9' && i<n)
    {
        r*=10;
        r+=v[i]-'0';
        i++;
    }

    return r;
}