#include <bits/stdc++.h>
using namespace std;

ifstream fin("evaluare.in");
ofstream fout("evaluare.out");

char sir[100001], *p = sir;

long term();
long fact();

long eval()
{
    long r = term();
    while(*p == '+' || *p == '-')
        switch(*p)
        {
            case '+':
                p++;
                r += term();
                break;
            case '-':
                p++;
                r += term();
                break;
        }
    return r;
}

long term()
{
    long r = fact();
    while(*p == '*' || *p == '/')
        switch(*p){
            case '*':
                p++;
                r *= fact();
                break;
            case '/':
                p++;
                r /= fact();
                break;
        }
    return r;
}

long fact()
{
    long r = 0;
    if(*p == '(')
    {
        p++;
        r = eval();
        p++;
    }
    while(*p >= '0' && *p <= '9')
        r = r * 10 + *p - '0', p++;
    return r;
}

int main()
{
    fin.getline(sir, 1001);
    fout << eval();
    return 0;
}