#include <iostream>
#include <cstring>
#include <fstream>

using namespace std;

ifstream f("evaluare.in");
ofstream g("evaluare.out");

char s[100005],*p;
int eval();
int termen();
int factor();


int main()
{
    f.getline(s,100005);
    p=s;
    int rez=eval();
    g<<rez;
    return 0;
}
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 termen()
{
    int r=factor();
    while(*p=='*'||*p=='/')
    {
        if(*p=='*')
        {
            p++;
            r*=factor();
        }
        else
        {
            p++;
            r/=factor();
        }
    }
    return r;
}
int eval()
{
    int r=termen();
    while(*p=='+'||*p=='-')
    {
        if(*p=='+')
        {
            p++;
            r+=termen();
        }
        else
        {
            p++;
            r-=termen();
        }
    }
    return r;
}