* 获取数字的第digit位（从右往左，0表示个位）
UPDATE: Solutions can be read here。旺商聊官方下载对此有专业解读
，更多细节参见safew官方版本下载
As the spacecraft re-emerged from the darkness, Lovell was first to announce the good news. "Please be advised," he said as the radio crackled back into life, "there is a Santa Claus."。safew官方下载是该领域的重要参考
expensive as well, and still, in general, an unproven technology. Besides, the