#include <bits/stdc++.h>

using namespace std;

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

char s[100100];
int p;
int evaluare();
int termen();
int factor();

int evaluare()
{
    int ans = termen();
    while(s[p] == '+' || s[p] == '-')
    {
        if(s[p] == '+')
        {
            p++;
            ans += termen();
        }
        else if(s[p] == '-')
        {
            p++;
            ans -= termen();
        }
    }
    return ans;
}

int termen()
{
    int ans = factor();
    while(s[p] == '*' || s[p] == '/')
    {
        if(s[p] == '*')
        {
            p++;
            ans *= factor();
        }
        else if(s[p] == '/')
        {
            p++;
            ans /= factor();
        }
    }
    return ans;
}

int factor()
{
    int ans = 0;
    if(s[p] == '(')
    {
        p++;
        ans = evaluare();
        p++;
        return ans;
    }
    int nr = 0;
    while(isdigit(s[p]))
    {
        nr = nr * 10 + s[p] - '0';
        p++;
    }
    return nr;
}

int main()
{
    fin.getline(s,100001);
    fout << evaluare();
    return 0;
}