Rank-3 factorization
// 步骤3：计算初始无序区间[left, right]的最大值和最小值
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A skeleton of the alvarezsauroid Alnashetri cerropoliciensis—representing a highly complete alvarezsauroid skeleton from South America—provides evidence on the evolution of the peculiar anatomy and miniaturization within this unusual theropod dinosaur clade.