After determining the result output a JSON with two fields:
"We've got to get those astronauts to the Moon and then back again, completely safely," says Cleaver.
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// 单调栈：存储索引（而非值），栈内索引对应的nums值保持「单调递减」
caution, as they may not always be accurate or appropriate.
四、批准免去杨景海的山西省人民检察院检察长职务；