#include <bits/stdc++.h>
#define nmax 100005
using namespace std;

char s[nmax];
int i;

int termen();
int factor();
int paranteze();

int paranteze()
{
    int r=0;
    if(s[i]=='(')
    {
        i++;
        r=termen();
        i++;
    }
    else
        for(;s[i]>='0' && s[i]<='9';i++)
            r=r*10+s[i]-'0';
    return r;
}
int termen()
{
    int r=factor();
    while(s[i]=='+' || s[i]=='-')
    {
        if (s[i]=='+')
        {
            i++;
            r+=factor();
        }
        else if(s[i]=='-')
        {
            i++;
            r-=factor();
        }
    }
    return r;
}
int factor()
{
    int r=paranteze();
    while(s[i]=='*' || s[i]=='/')
    {
        if (s[i]=='*')
        {
            i++;
            r*=paranteze();
        }
        else if(s[i]=='/')
        {
            i++;
            r/=paranteze();
        }
    }
    return r;
}

int main()
{
    ifstream cin("evaluare.in");
    ofstream cout("evaluare.out");
    cin.getline(s,100005);
    cout<<termen();
    return 0;
}