#include <bits/stdc++.h>
#define NMAX 1000
using namespace std;
ifstream fin("evaluare.in");
ofstream fout("evaluare.out");
char s[NMAX];
int i;

//fct
int termen();
int factor();
int expresie()
{
    int t=termen();
     while(s[i]=='-' || s[i]=='+')
        {
         i++;
         if(s[i-1]=='+')
            t+=termen();
         else
            t-=termen();

        }
     return t;

}
int termen()
{
 int t=factor();
 while(s[i]=='*' || s[i]=='/')
    {
     i++;
     if(s[i-1]=='*')
        t*=factor();
        else
            t/=factor();

    }
    return t;
}
int factor()
{
  int t=0;
  if(s[i]=='(')
  {
     i++,t=expresie();i++;
  }
  else
    //e numar clar
    while(s[i]>='0' && s[i]<='9')
    {
     t=t*10+(s[i]-48);
     i++;
    }
   return t;
}
int main()
{fin.getline(s,NMAX);
    fout<<expresie();

    return 0;
}