#include <iostream>
#include <fstream>
using namespace std;

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

char s[100001];
int i=0;

int expr();
int termen();
int factor();

int main()
{
    f>>s;
    g<<expr();
    return 0;
}

int expr()
{ int r=termen();
  while (s[i]=='+' || s[i]=='-')
    if (s[i]=='+') i++, r+=termen();
    else i++, r-=termen();
  return r;
}

int termen()
{ int r=factor();
  while (s[i]=='*' || s[i]=='/')
    if (s[i]=='*') i++, r*=factor();
    else i++, r/=factor();
  return r;
}

int factor()
{ int r=0;
  if (s[i]=='(') i++, r=expr(), i++;
  else while (s[i]>='0' && s[i]<='9') r=r*10+s[i]-'0', i++;
  return r;
}