#include <fstream>
#include <cstring>

using namespace std;

int n;
char s[100010],*p;

int eval();
int termen();
int factor();

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

int eval()
{
    int rez;
    rez=termen();
    while(*p=='+' || *p=='-')
    {
        if(*p=='+')
        {
            p++;
            rez+=termen();
        }
        else
        {
            p++;
            rez-=termen();
        }
    }
    return rez;
}

int termen()
{
    int rez;
    rez=factor();
    while(*p=='*' || *p=='/')
    {
        if(*p=='*')
        {
            p++;
            rez*=factor();
        }
        else
        {
            p++;
            rez/=factor();
        }
    }
    return rez;
}

int factor()
{
    int rez;
    rez=0;
    if(*p=='(')
    {
        p++;
        rez=eval();
        p++;
    }
    else
    {
        while(isdigit(*p))
        {
            rez*=10;
            rez+=(*p-'0');
            p++;
        }
    }
    return rez;
}
int main()
{
    fin.get(s,100010);
    p=s;
    n=eval();
    fout<<n;
    return 0;
}