#include <bits/stdc++.h>
using namespace std;
ifstream fin ("evaluare.in");
ofstream fout ("evaluare.out");
char sir[100009];int n,p;
int termen () ;
int factor ();
int eval () {
 int r=termen();
 while(sir[p]=='+' || sir[p]=='-') {
  if(sir[p]=='+')
   ++p,r+=termen();
  else
   ++p,r-=termen();
 }
 return r;
}
int termen () {
 int r=factor();
 while(sir[p]=='*' || sir[p]=='/') {
  if(sir[p]=='*')
   ++p,r*=factor();
  else
   ++p,r/=factor();
 }
 return r;
}
int factor () {
 int r=0;
 if(sir[p]=='(') {
  ++p;r=eval();
  ++p;
 }
 else {
  while(sir[p]>='0' && sir[p]<='9')
   r=r*10+sir[p]-'0',++p;
 }
 return r;
}
int main () {
 fin.getline(sir+1,100005);p=1;n=strlen(sir+1);
 fout<<eval();
 return 0;
}