#include <bits/stdc++.h>

using namespace std;
ifstream f("evaluare.in");
ofstream g("evaluare.out");
string s;
int i=0;
int expresie();
int termen();
int factor();
int numar();

int main()
{
    f >> s;
    g << expresie();
    return 0;
}

int expresie()
{
    int r=termen();
    while(s[i]=='+'||s[i]=='-')
    {
        if(s[i]=='+')
        {
            i++;
            r+=termen();
        }
        else
        {
            i++;
            r-=termen();
        }
    }
    return r;
}
int termen()
{
    int r=factor();
    while(s[i]=='*'||s[i]=='/')
    {
        if(s[i]=='*')
        {
            i++;
            r*=factor();
        }
        else
        {
            i++;
            r/=factor();
        }
    }
    return r;
}
int factor()
{
    int r;
    if(s[i]=='(')
    {
        /// trebuie ignorate parantezele altfel moarte
        i++;
        r=expresie();
        i++;
    }
    else
    {
        r=numar();
    }
    return r;
}
int numar()
{
    int r=0;
    while(s[i]>='0'&&s[i]<='9')
    {
        r*=10;
        r+=(s[i]-'0');
        i++;
    }
    return r;
}