#include <iostream>
#include <fstream>
#include <cstring>
#include <cctype>
using namespace std;
const int lmax=100005;

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


char s[lmax];
int i=0;

int num();
int mult();

int solve()
{
    long t=mult();
    while(s[i]=='+' || s[i]=='-')
    {
        if(s[i]=='+')
        {
            i++;
            t+=mult();
        }
        else
        {
            i++;
            t-=mult();
        }
    }
    return t;
}

int mult()
{
    long t=num();
    while(s[i]=='*' || s[i]=='/')
    {
        if(s[i]=='*')
        {
            i++;
            t*=num();
        }
        else
        {
            i++;
            t/=num();
        }
    }
    return t;
}

int num()
{
    int t=0;
    if(s[i]=='(')
    {
        i++;
        t=solve();
        i++;
    }
    else
        while(isdigit(s[i]))
        {
            t=t*10+s[i++]-'0';
        }
        return t;
}

void citire()
{
    fin.getline(s,lmax);
}

int main()
{
    citire();
    cout<<solve();
    return 0;
}