06 2017 档案

USACO 完结的一些感想
摘要：其实日期没有那么近啦……只是我偶尔还点进去造成的，导致我没有每一章刷完的纪念日了 但是全刷完是今天啦 讲真，题很锻炼思维能力，USACO保持着一贯猎奇的题目描述，以及尽量不用高级算法就完成的题解……例如用暴搜加优化代替插头dp 但是第6章！我就说第6章！为什么大赛的实践，几乎全是暴搜！是为了传达给我 阅读全文
posted @ 2017-06-17 20:38 sigongzi 阅读(8048) 评论(4) 推荐(1)
USACO 6.5 Checker Challenge
摘要：Checker Challenge Examine the 6x6 checkerboard below and note that the six checkers are arranged on the board so that one and only one is placed in ea 阅读全文
posted @ 2017-06-17 20:12 sigongzi 阅读(490) 评论(0) 推荐(0)
USACO 6.5 The Clocks
摘要：Consider nine clocks arranged in a 3x3 array thusly: The goal is to find a minimal sequence of moves to return all the dials to 12 o'clock. Nine diffe 阅读全文
posted @ 2017-06-17 19:31 sigongzi 阅读(328) 评论(0) 推荐(0)
USACO 6.5 Betsy's Tour （插头dp）
摘要：A square township has been divided up into N2 square plots (1 <= N <= 7). The Farm is located in the upper left plot and the Market is located in the 阅读全文
posted @ 2017-06-11 16:13 sigongzi 阅读(505) 评论(1) 推荐(0)
USACO 6.5 Closed Fences
摘要：A closed fence in the plane is a set of non-crossing, connected line segments with N corners (3 < N < 200). The corners or vertices are each distinct 阅读全文
posted @ 2017-06-10 23:36 sigongzi 阅读(434) 评论(0) 推荐(0)
USACO 6.4 Electric Fences
摘要：Farmer John has decided to construct electric fences. He has fenced his fields into a number of bizarre shapes and now must find the optimal place to 阅读全文
posted @ 2017-06-04 09:25 sigongzi 阅读(465) 评论(0) 推荐(0)
USACO 6.5 All Latin Squares
摘要：A square arrangement of numbers is a 5 x 5 Latin Square because each whole number from 1 to 5 appears once and only once in each row and column. Write 阅读全文
posted @ 2017-06-03 21:54 sigongzi 阅读(627) 评论(0) 推荐(0)