HBC24951[网络流24题]圆桌问题[USACO 2008 Jan G]Haybale Guessing题解

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The cows, who always have an inferiority complex about their intelligence, have a new guessing game to sharpen their brains.A designated 'Hay Cow' hides behind the barn and creates N uniquely-sized stacks of hay bales, each with 1..1,000,000,000 bales of hay.The other cows then ask the Hay Cow a series of Q questions about the the stacks, all having the same form:. What is the smallest number of bales of any stack in the range of stack numbers Ql..Qh ?The Hay Cow answers each of these queries with a single integer A whose truthfulness is not guaranteed.Help the other cows determine if the answers given by the Hay Cow are self-consistent or if certain answers contradict others.

The cows, who always have an inferiority complex about their intelligence, have a new guessing game to sharpen their brains. A designated 'Hay Cow' hides behind the barn and creates N (1 ≤ N ≤ 1,000,000) uniquely-sized stacks (conveniently numbered 1..N) of hay bales, each with 1..1,000,000,000 bales of hay. The other cows then ask the Hay Cow a series of Q (1 ≤ Q ≤ 25,000) questions about the the stacks, all having the same form: What is the smallest number of bales of any stack in the range of stack numbers Ql..Qh (1 ≤ Ql ≤ N; Ql ≤ Qh ≤ N)?The Hay Cow answers each of these queries with a single integer A whose truthfulness is not guaranteed. Help the other cows determine if the answers given by the Hay Cow are self-consistent or if certain answers contradict others.

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标签： HBC24951[网络流24题]圆桌问题[USACO 2008 Jan G]Haybale Guessing题解