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洛谷P5994 [PA2014]Kuglarz(异或思维+MST)
2022-06-25 06:43:00 【mfy的1号小迷弟】
洛谷P5994 [PA2014]Kuglarz(异或思维+MST)
题意:
魔术师的桌子上有 n n n 个杯子排成一行,编号为 1 , 2 , … , n 1,2,…,n 1,2,…,n,其中某些杯子底下藏有一个小球,如果你准确地猜出是哪些杯子,你就可以获得奖品。
花费 c i j c_{ij} cij 元,魔术师就会告诉你杯子 i , i + 1 , … , j i,i+1,…,j i,i+1,…,j 底下藏有球的总数的奇偶性。
采取最优的询问策略,你至少需要花费多少元,才能保证猜出哪些杯子底下藏着球?
思路:
MST
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