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一个十进制整数被叫做权势二进制，当他的十进制表示的时候只由0或1组成。例如0，1，101，110011都是权势二进制而2，12，900不是。 当给定一个n的时候，计算一下最少要多少个权势二进制相加才能得到n。 Input单组测试数据。 第一行给出一个整数n (1<=n<=1,000,000)Outp 阅读全文
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Gappu has a very busy weekend ahead of him. Because, next weekend is Halloween, and he is planning to attend as many parties as he can. Since it's Hal 阅读全文
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John never knew he had a grand-uncle, until he received the notary's letter. He learned that his late grand-uncle had gathered a lot of money, somewhe 阅读全文
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Farmer John has gone to town to buy some farm supplies. Being a very efficient man, he always pays for his goods in such a way that the smallest numbe 阅读全文
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The title of this problem is familiar,isn't it?yeah,if you had took part in the "Rookie Cup" competition,you must have seem this title.If you haven't 阅读全文
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"Fat and docile, big and dumb, they look so stupid, they aren't much fun..." - Cows with Guns by Dana Lyons The cows want to prove to the public that 阅读全文
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电子科大本部食堂的饭卡有一种很诡异的设计，即在购买之前判断余额。如果购买一个商品之前，卡上的剩余金额大于或等于5元，就一定可以购买成功（即使购买后卡上余额为负），否则无法购买（即使金额足够）。所以大家都希望尽量使卡上的余额最少。 某天，食堂中有n种菜出售，每种菜可购买一次。已知每种菜的价格以及卡上的 阅读全文
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给定两个整数A和B，求出二者的和。Input The first line of the input contains an integer T(1<=T<=20) which means the number of test cases. Then T lines follow, each lin 阅读全文
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度熊手上有一本字典存储了大量的单词，有一次，他把所有单词组成了一个很长很长的字符串。现在麻烦来了，他忘记了原来的字符串都是什么，神奇的是他竟然记得原来那些字符串的哈希值。一个字符串的哈希值，由以下公式计算得到： H(s)=∏i≤len(s)i=1(Si−28) (mod 9973)SiSi代表 S[ 阅读全文
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Lily特别喜欢养花，但是由于她的花特别多，所以照料这些花就变得不太容易。她把她的花依次排成一行，每盆花都有一个美观值。如果Lily把某盆花照料的好的话，这盆花的美观值就会上升，如果照料的不好的话，这盆花的美观值就会下降。有时，Lily想知道某段连续的花的美观值之和是多少，但是，Lily的算术不是很 阅读全文