#include <bits/stdc++.h>

using namespace std;
ifstream f("evaluare.in");
ofstream g("evaluare.out");
string s;
string :: iterator p;
int eval();
int termen();
int factor();
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(isdigit(*p))
        {
            r = r*10 + *p - '0';
            ++p;
        }
    }
    return r;
}
int main()
{
    getline(f,s);
    p = s.begin();
    g<<eval()<<'\n';
    return 0;
}