输入：num = "1432219", k = 3
The findings go as far to coin the phrase “compulsive unlocking,” referring to when children usually get up—around 7 a.m., mirroring a biological clock that resembles that of a smoker’s—and check their phone almost religiously. The company also girls were 17% more likely to experience anxiety as a result of pressures regarding one’s digital availability and connection.
，这一点在下载安装 谷歌浏览器 开启极速安全的 上网之旅。中也有详细论述
被释放十五天后，她再度逃亡，未与任何人告别，只对她的母亲说了一句：“妈，我走了。”离开为自己哭泣的母亲，她带着三舅，每人花费十盎司黄金，穿越中国南海，十五天后抵达安全之地，旋即飞往德国。她回忆，当时想去美、法的人，须先滞留泰国难民营五年，而她自觉“去哪都行”。
// TypeError: Cannot obtain lock — stream is permanently locked