#include <iostream>
#include <fstream>
#include <cstring>
#include <string>
#include <climits>
#include <algorithm>
#include <cmath>
#include <queue>
#include <iomanip>
using namespace std;

ifstream fin("evaluare.in");
ofstream fout("evaluare.out");
#define baza 10
#define MAX 100000

typedef long long int lli;

char S[MAX+10],*p=S;

int termen();
int factor();

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

        }
        if(*p=='-')
        {
            p++;
            r-=termen();
        }
    }
    return r;
}

int termen()
{
    int r=factor();
    while(*p=='*' || *p=='/')
    {
        if(*p=='*')
        {
            p++;
            r*=factor();

        }
        if(*p=='/')
        {
            p++;
            r/=factor();
        }
    }
    return r;
}

int factor()
{
    int r=0;
    if(*p=='(')
       {
           p++;
           r=eval();
           p++;
       }
    while(*p>='0' && *p<='9')
    {
        r=r*10+*p-'0';
        p++;
    }

    return r;
}


int main()
{
    int a, b, z, t, ki, c;
    fin.getline(S,MAX);

    fout<<eval();

    return 0;
}