McKenzie worked his way up to the job of station leader after completing his first contract "on the ice" in 2019. He started as a mechanical maintenance engineer at BAS's Rothera Research Station, 1,000 miles away from Halley VI.
// 2. 维护单调递减栈：弹出所有≤当前价格的索引（这些索引对应的价格无法成为后续价格的「上一个更大值」）
，更多细节参见夫子
for (int i = 1; i < range; i++) {
if (i < len) {