#include <stdio.h>
main()
{
	int	c, where = -1, line = 0;
	int	start;
	int	null = 0;

	while ((c = getchar()) != EOF) {
		where++;
		if (c == '\n') line++;
		if (c && null) {
			fprintf(stderr,
			    "Found null start 0x%x end 0x%x len 0x%x line %d\n",
			    start, where, where - start, line);
		}
		if (c) {null = 0; continue;}
		if (null) continue;
		start = where;
		null = 1;
	}
}