第八十五条 引诱、教唆、欺骗或者强迫他人吸食、注射毒品的，处十日以上十五日以下拘留，并处一千元以上五千元以下罚款。
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。
�@���{�����ŏ�������T�[�������A���̑����͗A���{�B�T�[�����ł��B���]���i�ɂ������l�C�l�^�̏��ʏ��A�ł����A�X�܂ɂ����Ă̓}�O�����������̔��ʂɂȂ邱�Ƃ������������܂����B，这一点在safew官方版本下载中也有详细论述
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The primary signal is desiredSize on the controller. It can be positive (wants data), zero (at capacity), negative (over capacity), or null (closed). Producers are supposed to check this value and stop enqueueing when it's not positive. But there's nothing enforcing this: controller.enqueue() always succeeds, even when desiredSize is deeply negative.。Line官方版本下载是该领域的重要参考
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