/*
Andrew?ID?:?guest486
Name?:?Li?Yuanchun
Email?:?tzlyc@pku.edu.cn
????
*/
#include?
#include?
#include?
#include?
#include?

#include?“mm.h“
#include?“memlib.h“

/*?If?you?want?debugging?output?use?the?following?macro.??When?you?hand
?*?in?remove?the?#define?DEBUG?line.?*/
#define?DEBUG
#ifdef?DEBUG
#?define?dbg_printf（...）?printf（__VA_ARGS__）
#else
#?define?dbg_printf（...）
#endif


/*?do?not?change?the?following!?*/
#ifdef?DRIVER
/*?create?aliases?for?driver?tests?*/
#define?malloc?mm_malloc
#define?free?mm_free
#define?realloc?mm_realloc
#define?calloc?mm_calloc
#endif?/*?def?DRIVER?*/


//Word?4?bytes
#define?WSIZE?4
//Double?words?8?bytes
#define?DSIZE?8
//Header?size
#define?HEADSIZE?4
//Header?and?footer?sign?8?bytes
#define?HNF