#include<cstdio>
#include<cstdlib>
#define N 100001
char *s;

int E(char *&p)
{int T(char*&);
char c;
int w,r=T(p);
if(!(*p))
      return r;
while((c=*p)=='+'||c=='-')
      {w=T(++p);
      if(c=='+')
            r+=w;
      else
            r-=w;}
return r;}

int T(char *&p)
{int F(char*&);
char c;
int w,r=F(p);
if(!(*p))
      return r;
while((c=*p)=='*'||c=='/')
      {w=F(++p);
      if(c=='*')
            r*=w;
      else
            r/=w;}
return r;}

int F(char *&p)
{int r;
if(*p=='(')
      {r=E(++p),p++;
      return r;}
else
      return (int)strtod(p,&p);}

int main()
{freopen("evaluare.in","r",stdin);
freopen("evaluare.out","w",stdout);
s=new char[N];
gets(s);
printf("%d",E(s));
return 0;}