#include <bits/stdc++.h>

using namespace std;

const long MAX = 100005;
char S[MAX], *p = S;

ifstream f("evaluare.in");
ofstream g("evaluare.out");

long termen();
long factor();

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

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

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

int main() {
    f.getline(S, MAX);
    g << eval();
    f.close();
    g.close();
    return 0;
}