Games and physics simulations need to detect which objects are touching or overlapping. With nnn objects, checking every pair is O(n2)O(n^2)O(n2) comparisons, which gets expensive fast. A hundred objects means roughly 5,000 pair checks. A thousand means nearly 500,000.
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The Brooklyn native and student of the famed Julliard School in New York was a founder of the doo-wop group The Tokens in the late 1950s.。旺商聊官方下载对此有专业解读
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第四十二条 增值税法第二十九条第一项所称经省级以上财政、税务主管部门批准可以由总机构汇总申报纳税，是指有固定生产经营场所的纳税人，总机构和分支机构不在同一省（自治区、直辖市）内的，经国务院财政、税务主管部门批准，可以由总机构汇总向总机构所在地的主管税务机关申报纳税；总机构和分支机构在同一省（自治区、直辖市）内但不在同一县（市、区、旗）内的，经省（自治区、直辖市）财政、税务主管部门批准，可以由总机构汇总向总机构所在地的主管税务机关申报纳税。