#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <stdbool.h>

int
main (void)
{
  int a;
  int b;

  a = 10;
  b = 20;

  printf ("%i\n", a);
  printf ("%i\n", b);

  return EXIT_SUCCESS;
}