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推荐博客 ：string 写的大数加法 ： http://www.cnblogs.com/duanguyuan/p/3285836.html 阅读全文
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在一个给定形状的棋盘（形状可能是不规则的）上面摆放棋子，棋子没有区别。要求摆放时任意的两个棋子不能放在棋盘中的同一行或者同一列，请编程求解对于给定形状和大小的棋盘，摆放k个棋子的所有可行的摆放方案C。 Input 输入含有多组测试数据。 每组数据的第一行是两个正整数，n k，用一个空格隔开，表示了将 阅读全文
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Given a positive integer n, write a program to find out a nonzero multiple m of n whose decimal representation contains only the digits 0 and 1. You m 阅读全文
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Farmer John knows that an intellectually satisfied cow is a happy cow who will give more milk. He has arranged a brainy activity for cows in which the 阅读全文
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Farmer John has been informed of the location of a fugitive cow and wants to catch her immediately. He starts at a point N (0 ≤ N ≤ 100,000) on a numb 阅读全文