* 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
Lily JamaliNorth America Technology correspondent, New York
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And that she said was all sooth. I wifed on her, and she was full shyne wife, wise and wælfast. Ne yemeet I never ere suche woman. She was on yefoughte so bold so any man, and theah hwæthere her andwlite was winesome and fair.
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(and thanks to Matthew Miller for reviewing and providing feedback on this post)