#ifdef DEBUG
#define BUG(s) s
#else
#define BUG(s)
#endif

#include <ctype.h>
#include <stdio.h>
#include <stdlib.h>
#include <sys/stat.h>

#include <unistd.h>
#include <signal.h>
#include <errno.h>

#define MAS 512
#define PAT 256
#define BUF 256
#define DP  (uint)(sizeof(uint)*8)
#define DEX (uint)((MAS+DP-1)/DP)
#define strsize(S) (snprintf(NULL,0,"%s",S))
#define P(p) (pet[sdex(p)])
#define PT(p) (P(p).r)
#define PC(p) (P(p).c)
#define PB(p) (P(p).b[PC(p)])
#define PE(p) (P(p).e)
#define Fin(b) (fread(b,sizeof(b[0]),sizeof(b),stdin))

typedef unsigned int uint;
typedef unsigned char uchar;
typedef unsigned long ulong;
typedef struct {
 uchar r;
/* 0    inactive
   1,2,3  active PET states
   :
   1    new search
   2,3  continue search
   :
   2    joined strings
   3    begin long-search
   :
   4   :2+ sdex() return next
   5   :3+ sdex() return next
   6   :3+ at end. (without pattern-matching) :1+
 */
 uchar c;
/* 0,ff   current position here
 */
 uchar e;
/* 0,ff   end (char b[]) at character n...
 */
 uchar b[PAT];
} Pet;