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作者：cheka关于学英语，我的初中英语老师有一句名言——“先死后活”。所谓“先死”，就是所有的东西，统统都给他背下来，等到这些东西让你感觉到很自然的时候，再去考虑“活”。他是这么要求我们的：每一篇课文，我们都要能背出来，能默写。准确的说，每一篇课文，要求在一口气内背下来，中间不许喘气；要在规定时间默写出来， 不允许错一个标点。这个标准到了初二初三的时候有所降低 ，中间可以有喘气，毕竟课文比较长了，但是早期是严格执行的。每天早上他用抽签的方式把人喊到他的办公室去背，每周英语课会有专门的默写时间。不合格的惩 罚是把该篇课文抄写100遍。有一次我的默写交上去后才想起来一个大小写错了，当天晚上我就乖 阅读全文
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Numbers That CountTime Limit: 1000MSMemory Limit: 10000KTotal Submissions: 17143Accepted: 5637Description"Kronecker's Knumbers" is a little company that manufactures plastic digits for use in signs (theater marquees, gas station price displays, and so on). The owner and sole employee, 阅读全文
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DividingTime Limit:1000MSMemory Limit:10000KTotal Submissions:48515Accepted:12207DescriptionMarsha and Bill own a collection of marbles. They want to split the collection among themselves so that both receive an equal share of the marbles. This would be easy if all the marbles had the same value, be 阅读全文
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Counterfeit DollarTime Limit:1000MSMemory Limit:10000KTotal Submissions:34516Accepted:10965DescriptionSally Jones has a dozen Voyageur silver dollars. However, only eleven of the coins are true silver dollars; one coin is counterfeit even though its color and size make it indistinguishable from the 阅读全文
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JosephTime Limit:1000MSMemory Limit:10000KTotal Submissions:42451Accepted:15971DescriptionThe Joseph's problem is notoriously known. For those who are not familiar with the original problem: from among n people, numbered 1, 2, . . ., n, standing in circle every mth is going to be executed and on 阅读全文
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SticksTime Limit:1000MSMemory Limit:10000KTotal Submissions:103596Accepted:23602DescriptionGeorge took sticks of the same length and cut them randomly until all parts became at most 50 units long. Now he wants to return sticks to the original state, but he forgot how many sticks he had originally an 阅读全文
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STAMPSTime Limit:1000MSMemory Limit:10000KTotal Submissions:13528Accepted:3749DescriptionHave you done any Philately lately?You have been hired by the Ruritanian Postal Service (RPS) to design their new postage software. The software allocates stamps to customers based on customer needs and the deno 阅读全文
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Edge DetectionTime Limit:1000MSMemory Limit:10000KTotal Submissions:14193Accepted:3177DescriptionIONU Satellite Imaging, Inc. records and stores very large images using run length encoding. You are to write a program that reads a compressed image, finds the edges in the image, as described below, an 阅读全文
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Maya CalendarTime Limit:1000MSMemory Limit:10000KTotal Submissions:55788Accepted:17223DescriptionDuring his last sabbatical, professor M. A. Ya made a surprising discovery about the old Maya calendar. From an old knotted message, professor discovered that the Maya civilization used a 365 day long ye 阅读全文
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JugsTime Limit:2 Seconds Memory Limit:65536 KB Special JudgeIn the movie "Die Hard 3", Bruce Willis and Samuel L. Jackson were confronted with the following puzzle. They were given a 3-gallon jug and a 5-gallon jug and were asked to fill the 5-gallon jug with exactly 4 gallons. This proble 阅读全文