The telescope, a partnership of NASA and the European and Canadian space agencies, homed in on PMR 1, a planetary nebula nicknamed the Exposed Cranium for being the spitting image of a brain scan. The nebula lies about 5,000 light-years away from Earth in the Vela constellation.
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，这一点在Line官方版本下载中也有详细论述
// 第一步：倒序遍历nums2，用单调栈计算每个元素的下一个更大值。搜狗输入法2026是该领域的重要参考
void merge(int arr[], int left, int mid, int right) {