void extract(obiekt_str_max *tablica_max, obiekt_str_min *tablica_min, int index_max_heap, int index_min_heap) {
	if (heapsize < 1)
		return;
	else {
		obiekt_str_max tmp_max = tablica_max[index_max_heap];
		obiekt_str_min tmp_min = tablica_min[index_min_heap];
		tablica_max[index_max_heap].key = tablica_max[heapsize - 1].key;
		tablica_max[index_max_heap].index_max_heap = tablica_max[heapsize - 1].index_max_heap;
		tablica_max[index_max_heap].index = tablica_max[heapsize - 1].index;
		tablica_max[heapsize - 1].key = tmp_max.key;
		tablica_max[heapsize - 1].index_min_heap = tmp_max.index_min_heap;
		//tablica_max[heapsize - 1].index_max_heap = tmp_max.index_max_heap;
		tablica_max[heapsize - 1].index = tmp_max.index;
		tablica_min[index_min_heap].key = tablica_min[heapsize - 1].key;
		tablica_min[index_min_heap].index_max_heap = tablica_min[heapsize - 1].index_max_heap;
		tablica_min[index_min_heap].index = tablica_min[heapsize - 1].index;
		tablica_min[heapsize - 1].key = tmp_min.key;
		//tablica_min[heapsize - 1].index_min_heap = tmp_min.index_min_heap;
		tablica_min[heapsize - 1].index_max_heap = tmp_min.index_max_heap;
		tablica_min[heapsize - 1].index = tmp_min.index;
		heapsize--;
		min_heapify(tablica_min, index_min_heap);
		max_heapify(tablica_max, index_max_heap);
	}
}