const posToTime = new Map(); // 位置 → 到达终点的时间（避免重复计算）
NASA's decision to bring the crew home one month early, on Jan. 15, marked the agency's first controlled medical evacuation from the station in its 25 years of continuous operations. The incident highlighted the limits of treating complex health problems 250 miles away from Earth.。关于这个话题，同城约会提供了深入分析
for(i=1;i<n;++i) {，详情可参考谷歌浏览器【最新下载地址】
11. World Economic Situation and Prospects 2026 | UN Trade and Development (UNCTAD), unctad.org/publication…