WTI原油涨3.05%，报67.200美元/桶；布伦特原油涨2.94%，报72.920美元/桶。
Scott Mills made the announcement on his Radio 2 breakfast show
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// 核心逻辑：维护单调递增栈，仅当k0时移除高位大数
Hurdle: Everything you need to know to find the answers
You look at a region of the image. If all the pixels are roughly the same color (below some threshold), you store the average color for the whole region as a single value. If the pixels vary too much, you split the region into four quadrants and try again.