Cube  Diff

#include <stdarg.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>

#import <ObjFW/ObjFW.h>

typedef unsigned char uchar;
typedef unsigned short ushort;
typedef unsigned int uint;

#define max(a, b) (((a) > (b)) ? (a) : (b))
#define min(a, b) (((a) < (b)) ? (a) : (b))
#define rnd(max) (rand() % (max))
#define rndreset() (srand(1))
#define rndtime()                                            \
	{                                                    \
		for (int i = 0; i < (lastmillis & 0xF); i++) \