#include <iostream>
#include <fstream>
using namespace std;
const int nrmax=100010;
char in[nrmax], *p=in;
int termen();

int factor();

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

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

int factor()
{
    int r=0;
    if(*p=='(')
    {
        p++;
        r=eval();
        p++;
    }
    else
    {
        while(isdigit(*p))
        {
            r=r*10+*p-48;
            p++;
        }
    }
    return r;
}
ifstream f("evaluare.in");
ofstream g("evaluare.out");
int main()
{
    f.getline(s,nrmax);
    g<<eval();
    return 0;
}