#include <fstream>

#define NMax 100100
using namespace std;
ifstream fin("evaluare.in");
ofstream fout("evaluare.out");

char *p;
char str[NMax];

int factor();
int termen();

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()
{
    fin.getline(str,NMax);

    p=str;

    fout<<eval();


    return 0;
}