#include<iostream>
#include<cstdlib>
#include<string>

using namespace std;
int i;
string str;

int Expression();

int Term();

int Factor();

int No(int);

int main() {
  cin >> str;
  i = 0;
  cout << Expression() << endl;
}

int Expression() {
  int res = Term();
  while(1) {
    switch(str[i]) {
      case '+':
        i++;
        res += Term();
        break;
      case '-':
        i++;
        res -= Term();
        break;
      default:
        return res;
    }
  }
}

int Term() {
  int res = Factor();
  while(true) {
    switch(str[i]) {
      case '(':
        i++;
        res += Factor();
        break;
      case '*':
        i++;
        res *= Factor();
        break;
      case '/':
        i++;
        res /= Factor();
        break;
      default:
        return res;
    }
  }
}

int Factor() {
  int res = 0;
  switch(str[i]) {
    case '(':
      i++;
      res = Expression();
      i++;
      return res;
    default:
      return No(i);
  }
}

int No(int old) {
  while(isdigit(str[i])) i++;
  return atoi((str.substr(old, i)).c_str());
}