let sum of weights = 0.0
* 核心思路：单调递增栈 + 控制删除位数（k0），优先移除高位大数，保证剩余数字最小
。WPS下载最新地址是该领域的重要参考
She walked towards it and eventually found smoke billowing out of the tumble dryer. Touching the machine, she realised it was hot and, looking closer, she saw that part of it was on fire.
關恆的父母在他小時候已經離異，已定居在台灣多年的母親在得悉兒子的事情之後，數度從台灣前往美國為他尋求援助，加上得到外界的協助之後，他的心情慢慢調整起來，「到最後就是開始一直等，那是個漫長的等待。」
This story was originally featured on Fortune.com