#include<stdio.h>
FILE *f=fopen("evaluare.in","r"),
     *g=fopen("evaluare.out","w");
#define N_MAX 100010
char s[N_MAX];
int p;
int term();
int eval()
{ long r=term();
  while(s[p]=='+'||s[p]=='-') if(s[p]=='+') ++p,r+=term();
                              else ++p,r-=term();
  return r;
}
int fact()
{ long r=0;
  if(s[p]=='(') { ++p;
                  r=eval();
                  ++p;
                  }         
  else while(s[p]>='0'&&s[p]<='9') { r=(r<<3)+(r<<1)+s[p]-'0';
                                ++p;
                                }
  return r;
}  
int term()
{ long r=fact();
  while(s[p]=='*'||s[p]=='/') if(s[p]=='*') ++p,r*=fact();
                              else ++p,r/=fact();
  return r;
}
int main()
{ fgets(s,100006,f);
  fprintf(g,"%d\n",eval());
  fclose(f);
  fclose(g);
  return 0;
}