#include<stdio.h>
int main()
{
  int a,b,c;
  char sign;
  scanf("%d %c %d",&a,&sign,&b);
  if(sign=='+')
  {
  printf("%d\n",a+b);
  }
  else if(sign=='-')
  {
  printf("%d\n",a-b);
  }







return 0;
}



