The US is under pressure to return to the Moon. China is aiming for a lunar landing by 2030, and has been making steady progress towards this.
Last month, following the seizure of Venezuela's Maduro in a US military operation, US President Donald Trump told Cuba to "make a deal" or face unspecified consequences.
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（三）为实施考试作弊行为，向他人非法出售、提供考试试题、答案的；
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。