CF601B Lipshitz Sequence
题目描述
**【题目翻译】**
对于一个序列 $v_{1...n}$，当 $1\leq x
输入格式
无
输出格式
无
说明/提示
In the first query of the first sample, the Lipschitz constants of subarrays of  with length at least $ 2 $ are:
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The answer to the query is their sum.