#include <fstream>

using namespace std;
ifstream fin("evaluare.in");
ofstream fout("evaluare.out");
int i;
int exp();
int termen();
int factor();

char v[100005];


int exp()
{
    int nr=termen();
    while(v[i]=='+'||v[i]=='-'){
    if(v[i]=='+')
    {
        i++;
        nr+=termen();
    }
    else
    {
        i++;
        nr-=termen();
    }
    }
    return nr;

}


int termen()
{
    int nr=factor();
    while(v[i]=='*' || v[i]=='/')
    {
        if(v[i]=='*')
        {
            i++;
            nr*=factor();
        }
        else
        {
            i++;
            nr/=factor();
        }
    }
    return nr;
}
int factor()
{
    int nr=0;
    if(v[i]=='(')
    {
        i++;
        nr=exp();
        i++;
    }
    else
    {
        nr=0;
        while(v[i]>='0' && v[i]<='9')
        {
            nr=nr*10+(v[i]-'0');
            i++;
        }
    }
    return nr;
}


int main()
{
    fin>>v;
    i=0;
    fout<<exp();
}