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Problem Description On a grid map there are n little men and n houses. In each unit time, every little man can move one unit step, either horizontally 阅读全文
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Problem Description Matt is a big fan of logo design. Recently he falls in love with logo made up by rings. The following figures are some famous exam 阅读全文
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Description Your friend to the south is interested in building fences and turning plowshares into swords. In order to help with his overseas adventure 阅读全文
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题目描述 E.T. Inc. employs Maryanna as alien signal researcher. To identify possible alien signals and background noise, she develops a method to evaluate 阅读全文
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题目描述 fqk 退役后开始补习文化课啦,于是他打开了数学必修一开始复习函数,他回想起了一次函数都是 f(x)=kx+b的形式,现在他给了你n个一次函数 fi(x)=kix+b,然后将给你m个操作,操作将以如下格式给出: 1.M i k b,把第i个函数改为 fi(x)=kx+b。 2.Q l r 阅读全文