#include <reg52.h>
#include <stdio.h>
#define bool char

#define MOVE_STATE char
#define R 0
#define U 1
#define L 2
#define D 3


struct DOT
{
  unsigned char x;
  unsigned char y;
} ;
typedef struct DOT Dot;

struct BODY
{

  Dot d;
  MOVE_STATE m;
};

typedef struct BODY Body;