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

int
main()
{
	char *p, *oldp;
	int len;
	
	p = NULL;
	
	for (len = 10; len < 20000; len += 10) {
		oldp = p;
		p = realloc(p, len);
		printf("%d", p != oldp);
		oldp = p;
	}
	
	return 0;
}