#include <iostream>

using namespace std;
char s[3000],*p;
int eval();
int termen();
int factor();
int main()
{
    int rez;
    cin.getline(s,3000);
    p=s;
    rez=eval();
    cout<<rez;
    return 0;
}
int eval()
{
    int r=termen();
    while(*p=='+'||*p=='-')
    {
        if(*p=='+')
        {
            p++;
            r+=termen();
        }
        else
        {
            p++;
            r-=termen();
        }
    }
    return r;
}
int termen()
{
    int r=factor();
    while(*p=='*'||*p=='/')
    {
        if(*p=='*')
        {
            p++;
            r*=factor();
        }
        else
        {
            p++;
            r/=factor();
        }
    }
    return r;
}
int factor()
{
    int r=0;
    if(*p=='(')
    {
        p++;
        r=eval();
        p++;
    }
    else while('0'<=*p && '9'>=*p)
        {
            r=r*10+*p-'0';
            p++;
        }
return r;
}