#include <bits/stdc++.h>

using namespace std;
ifstream f("evaluare.in");
ofstream g("evaluare.out");
char *p, s[100005];
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(*p>='0' && *p<='9')
    {
        r=r*10+*p-'0';
        p++;
    }
    return r;
}
int main()
{
    f.getline(s,100000);
    p=s;
    int rez=eval();
    g<<rez;
    return 0;
}