#include<bits/stdc++.h>
using namespace std;
ifstream fin("evaluare.in");
ofstream fout("evaluare.out");
string s;

int termen(int&);
int expresie(int&);
int factor(int&);
int numar(int&);

int expresie(int &p)
{
  int r = termen(p);
  while (s[p]=='+' || s[p]=='-')
  {
    p++;
    if (s[p-1]=='+') r+=termen(p);
    else r-=termen(p);
  }
  return r;
}
int termen(int &p)
{
  int r = factor(p);
  while(s[p]=='/' || s[p]=='*')
  {
    p++;
    if (s[p-1]=='*') r*=factor(p);
    else r/=factor(p);
  }
  return r;
}
int factor(int &p)
{
  int r=0;
  if (s[p]=='(')
  {
    p++;
    r = expresie(p);
    if (s[p]==')') p++;
  }
  else r=numar(p);
  return r;
}
int numar(int &p)
{
  int nr=0;
  while(s[p]>='0' && s[p]<='9')
  {
    nr*=10;
    nr+=(s[p]-'0');
    p++;
  }
  return nr;
}
int main()
{
  fin>>s;
  int p=0;
  fout<<expresie(p)<<'\n';
  return 0;
}