#include<bits/stdc++.h>
using namespace std;
char s[100010], *p=s;

long factor();
long termen();

long eval()
{
    long r=0;
    r = termen();
    while(*p=='+' || *p=='-')
    {
        if(*p=='+')
        {
          ++p;
          r+=termen();
        }
        else
        {
            ++p;
            r-=termen();
        }
    }
    return r;
}

long termen()
{
    long r=0;
    r = factor();
    while(*p=='*' || *p=='/')
    {
        if(*p=='*')
        {
            p++;
            r*=factor();
        }
        else
        {
            p++;
            r/=factor();
        }
    }
    return r;
}

long factor()
{
    long r=0;
    if(*p=='(')
    {
        ++p;
        r = eval();
        ++p;
    }
    while(*p>='0' && *p<='9')
    {
        r*=10;
        r+=(*p -'0');
        p++;
    }
    return r;
}

int main()
{
    ifstream cin("evaluare.in");
    ofstream cout("evaluare.out");
    cin>>s;
    cout<<eval();

    return 0;
}