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Description: 这是本人在北京大学网站上做过的一道题希望对大家有所帮助-this is my web site at Beijing University has done a hope that you all have a right to help
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Size: 1024 |
Author: xiaoqing |
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Description: 北京大学pku_oj上的1043题的解题报告，很经典-Peking University pku_oj the 1043 report titled problem-solving, it is a classic
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Size: 22528 |
Author: 魄心 |
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Description: 两种解决方案 Richard just finished building his new house. Now the only thing the house misses is a cute little wooden fence. He had no idea how to make a wooden fence, so he decided to order one. Somehow he got his hands on the ACME Fence Catalogue 2002, the ultimate resource on cute little wooden fences. After reading its preface he already knew, what makes a little wooden fence cute.
A wooden fence consists of N wooden planks, placed vertically in a row next to each other. A fence looks cute if and only if the following conditions are met:
?The planks have different lengths, namely 1, 2, . . . , N plank length units.
?Each plank with two neighbors is either larger than each of its neighbors or smaller than each of them. (Note that this makes the top of the fence alternately rise and fall.) -Both solutions Richard just finished building his new house. Now the only thing the house misses is a cute little wooden fence. He had no idea how to make a wooden fence, so he decided to order one. Somehow he got his hands on the ACME Fence Catalogue 2002, the ultimate resource on cute little wooden fences. After reading its preface he already knew, what makes a little wooden fence cute. A wooden fence consists of N wooden planks, placed vertically in a row next to each other. A fence looks cute if and only if the following conditions are met:? The planks have different lengths, namely 1, 2,..., N plank length units.? Each plank with two neighbors is either larger than each of its neighbors or smaller than each of them. (Note that this makes the top of the fence alternately rise and fall.)
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Size: 3072 |
Author: bends |
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