your "true" PIN is a static value calculated from your card number and a key,
mark candidate[n] as used
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The principles of digital etiquette remain the same as other kinds of etiquette, but they are also “context specific and many of the rules are implicit rather than explicit,” said Rupert Wesson, a director at Debrett’s, the British etiquette guide, who outlined key tips for The Associated Press.
Thought to be made from a cattle femur, this decorated Anglo-Saxon spindle whorl, used to provide weight while spinning yarn, was unearthed from farmland near Bishopstone, Buckinghamshire.，更多细节参见91视频
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// 1. 将当日价格存入数组，记录当前索引（i是当前价格在arr中的位置）。关于这个话题，safew官方下载提供了深入分析