The result is almost what we need, but once more, the rules prohibit approximations that are exactly equal to r. The workaround is to subtract 1 from all sides of the inequality:
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。关于这个话题，下载安装 谷歌浏览器 开启极速安全的 上网之旅。提供了深入分析
adb shell will run a mksh shell on the device。电影对此有专业解读
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