提升全要素生产率 释放经济增长新潜力
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。
，更多细节参见雷电模拟器官方版本下载
It sounds like a contradiction, but for Carroll, it's the difference between destiny and graft.
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