#include <bits/stdc++.h>

using namespace std;
ifstream fin("evaluare.in");
ofstream fout("evaluare.out");
char s[100005];
int i=0;
int expresie();
int termen();
int factor();
int constanta();
int main()
{
    fin>>s;
    fout<<expresie();
    return 0;
}
int expresie()
{
    int t=termen();
    if(s[i]=='+'||s[i]=='-')
    {
        if(s[i]=='+')
        {
            i++;
            t=t+termen();
        }
        else if(s[i]=='-')
        {
            i++;
            t=t-termen();
        }
    }
    return t;
}
int termen()
{
    int f=factor();
    if(s[i]=='*'||s[i]=='/')
    {
        if(s[i]=='*')
        {
            i++;
            f=f*factor();
        }
        else if(s[i]=='/')
        {
            i++;
            f=f/factor();
        }
    }
    return f;
}
int factor()
{
    int ans;
    if(s[i]=='(')
    {
        i++;
        ans=expresie();
        i++;//sar peste (
    }
    else ans=constanta();
    return ans;
}
int constanta()
{
    int nr=0;
    while(isdigit(s[i]))
    {
        nr=nr*10+(s[i]-'0');
        i++;
    }
    return nr;
}