随笔分类 - 网站->USACO
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
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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
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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
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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
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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
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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
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摘要：In the square below, each row, each column and the two diagonals can be read as a five digit prime number. The rows are read from left to right. The c
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摘要：It's spring in Wisconsin and time to move the yearling calves to the yearling pasture and last year's yearlings to the greener pastures of the north 4
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摘要：[International readers should note that some words are puns on cows.] Having made a fortune on Playbov magazine, Hugh Heifer has moved from his origin
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摘要：The cows of Farmer Brown and Farmer John are planning a coordinated escape from their respective farms and have devised a method of encryption to prot
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摘要：Farmer John is trying to erect a fence around part of his field. He has decided on the shape of the fence and has even already installed the posts, bu
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摘要：Four rectangles are given. Find the smallest enclosing (new) rectangle into which these four may be fitted without overlapping. By smallest rectangle,
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摘要：Shaping Regions N opaque rectangles (1 <= N <= 1000) of various colors are placed on a white sheet of paper whose size is A wide by B long. The rectan
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摘要：It is said that if you give an infinite number of cows an infinite number of heavy-duty laptops (with very large keys), that they will ultimately prod
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摘要：Farmer John is stuck with another problem while feeding his cows. All of his N (1 ≤ N ≤ 100,000) cows (numbered 1..N) are lined up in front of the bar
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摘要：A Rectangular Barn Ever the capitalist, Farmer John wants to extend his milking business by purchasing more cows. He needs space to build a new barn f
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摘要：Postal Vans Tiring of their idyllic fields, the cows have moved to a new suburb. The suburb is a rectangular grid of streets with a post office at its
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摘要：A number, N (1 <= N < 5000), of rectangular posters, photographs and other pictures of the same shape are pasted on a wall. Their sides are all vertic
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摘要：Hidden Password Sometimes the programmers have very strange ways of hiding their passwords. Billy "Hacker" Geits chooses a string S composed of L (5 <
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摘要：In order to teach her young calvess the order of the letters in the alphabet, Bessie has come up with a game to play with them. The calves are given a
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