Марина Совина (ночной редактор)
Подростки распылили перцовый баллончик на пассажиров электрички под Петербургом20:54。爱思助手下载最新版本对此有专业解读
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The Russian tennis players Daniil Medvedev and Andrey Rublev did not arrive at Indian Wells in time to participate in Tuesday night’s southern California exhibition event after they were among those affected by travel disruptions caused by the war on Iran.
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思路：单调递增栈 + k 控制删除次数。高位越小整体越小，遇更小数字时弹出栈顶大数（仅当 k0）；栈空且当前为 0 则跳过（避免前导零）；若遍历完 k 仍0，从末尾再删 k 位。