The archaeologists will continue their excavations later this year.
思路：单调递减栈，找「上一个比当前价格大的元素索引」。正序遍历，弹出所有 ≤ 当前价格的索引；跨度 = 当前索引 - 栈顶索引（栈空则为 当前索引 + 1）。
。关于这个话题，搜狗输入法下载提供了深入分析
Медведев вышел в финал турнира в Дубае17:59
"I feel honoured to be part of the team that can make a difference instead of watching it on TV or hearing about it… I'd rather be right in there in the fight trying to stop it."