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Problem DescriptionYou have an n∗n matrix.Every grid has a color.Now there are two types of operating:L x y: for(int i=1;i#include#inc... 阅读全文
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Problem DescriptionGive a time.(hh:mm:ss)，you should answer the angle between any two of the minute.hour.second handNotice that the an... 阅读全文
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You are given n k-digit integers. You have to rearrange the digits in the integers so that the difference between the largest and the ... 阅读全文
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Problem DescriptionLillian is a clever girl so that she has lots of fans and often receives gifts from her fans.One day Lillian gets s... 阅读全文
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Problem DescriptionThere are m soda and today is their birthday. The 1-st soda has prepared n cakes with size 1,2,…,n. Now 1-st soda w... 阅读全文
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DescriptionGiven a set of sticks of various lengths, is it possible to join them end-to-end to form a square?InputThe first line of in... 阅读全文
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Alice and Bob love playing one-dimensional battle ships. They play on the field in the form of a line consisting of n square cells (th... 阅读全文
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Problem DescriptionThere are n soda sitting around a round table. soda are numbered from 1 to n and i-th soda is adjacent to (i+1)-th ... 阅读全文
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Problem Descriptionsoda has an integer array a1,a2,…,an. Let S(i,j) be the sum of ai,ai+1,…,aj. Now soda wants to know the value below... 阅读全文
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Problem DescriptionThere are n soda conveniently labeled by 1,2,…,n. beta, their best friends, wants to invite some soda to go hiking.... 阅读全文