1/*	$NetBSD$	*/
2
3#include <stdio.h>
4
5#define T_INIT	0100
6#define T_STOP	0111
7
8long	charin;			/* number of input character */
9
10main(argc, argv)
11char	**argv;
12{
13
14	int	 npages = 0;
15	register int	c;
16
17	while((c=getchar()) != EOF) {
18		charin++;
19		c &= 0377;
20		if(c != T_INIT)
21			continue;
22		else {
23			c=getchar();
24			c &= 0377;
25			if(c == T_STOP) {
26				npages++;
27				charin++;
28			}
29		}
30	}
31	if(charin<5) {
32		fprintf(stderr, "%s: no input\n", argv[0]);
33		exit(1);
34	}
35	printf("%d\n", npages);
36}
37