#include <bits/stdc++.h>

using namespace std;
ifstream fin("evaluare.in");
ofstream fout("evaluare.out");
char s[30001],*p;
int eval();
int termen();
int factor();
int eval()
{
    int r=termen();
    while(*p=='+' || *p=='-')
        if(*p=='+')
    {
        p++;
        r+=termen();

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

int main()
{ fin.getline(s,30001);
 p=s;
 fout<<eval();

    return 0;
}