#include <fstream>
#include <cstring>

using namespace std;
ifstream f ("evaluare.in");
ofstream g ("evaluare.out");
char s1[100010],*p;
int n;

int eval();
int termen();
int factor();

int main()
{
    f.getline(s1,100010);
    p=s1;
    n=eval();
    g<<n;
    return 0;
}


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('0'<=*p && *p<='9')
        {
            r*=10;
            r+=(int)*p-'0';
            p++;
        }
    return r;
}