#include <stdio.h>

#include <stdlib.h>

int

main (void)

{

  double d;

  int c;

  if (scanf ("%lg", &d) != 0)

    {

      printf ("scanf didn't failed\n");

      exit (1);

    }

  c = getchar ();

  if (c != ' ')

    {

      printf ("c is `%c', not ` '\n", c);

      exit (1);

    }

  return 0;

}