/*
#define PRINTF(x)	if(printf x == 0) {fprintf(stderr, "printf failed");\
				exit(EXIT_FAILURE);}
*/
#define PRINTF(x)	if(printf x != 0) {fflush(stdout);}
#define MALLOC(x,y)	if((x = malloc(y)) == NULL) {PRINTF(("realloc failed"))\
				exit(EXIT_FAILURE);}
#define REALLOC(x,y)    if((x = realloc(x,y)) == NULL) {PRINTF(("realloc failed")) exit(EXIT_FAILURE);}