#include <bits/stdc++.h>
using namespace std;
ifstream f("evaluare.in");
ofstream g("evaluare.out");
char s[100050],*p;
int r;
int eval();
int termen();
int factor();

int eval()
{
    int r;
    r=termen();
    while(*p=='+'||*p=='-')
        if(*p=='+')p++,r+=termen();
        else p++,r-=termen();
    return r;
}

int termen()
{
    int r;
    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+(int)*p-'0';
            p++;
        }
    }
    return r;
}

int main()
{
    f.getline(s,100000);
    p=s;
    g<<eval();
    return 0;
}