#include <stdio.h>
#include <stdlib.h>
#define HUNDRED 100
#define TWICE(x) 2 * x
#define TWICE_AS_GOOD(x) (2 * (x))
#define TWICE_AS_GOOD_X(X) (2 * (x) + X)

int main() {
  printf("HUNDRED: %d \n", HUNDRED);

  // int x = TWICE(5);
  int y = TWICE(5 + 1);
  int z = TWICE_AS_GOOD_X(5 + 1);
  printf(" X: %d \n Y: %d \n Z: %d \n", x, y, z);
  exit(0);
}