Раскрыты подробности похищения ребенка в Смоленске09:27
That Time of the Month: Surgical menopause5 Live News Specials
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The Black Crowes
Белорусская теннисистка Соболенко посетила показ GucciБелорусская теннисистка Арина Соболенко посетила показ Gucci в Милане
This is the same idea behind binary search. In a sorted array, you compare against the middle element and eliminate half the remaining candidates. In a quadtree, you choose one of four quadrants and ignore the other three regions. Each level narrows the search space by a factor of four instead of two.