摘要：
DescriptionToday on a lecture about strings Gerald learned a new definition of string equivalency. Two stringsaandbof equal length are calledequivalen... 阅读全文
摘要：
Description我们知道，在编程中，我们时常需要考虑到时间复杂度，特别是对于循环的部分。例如，如果代码中出现for(i=1;iint c[2001][2001];void init(){int n, m;c[0][0] = 1;for(n = 1; n <= 2000; n++){ c[n][... 阅读全文
摘要：
DescriptionThe GeoSurvComp geologic survey company is responsible for detecting underground oil deposits. GeoSurvComp works with one large rectangular... 阅读全文
摘要：
DescriptionA ring is composed of n (even number) circles as shown in diagram. Put natural numbersinto each circle separately, and the sum of numbers i... 阅读全文
摘要：
Description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... 阅读全文
摘要：
DescriptionThere is a piece of paper in front of Tom, its length and width are integer. Tom knows the area of this paper, he wants to know the minimum... 阅读全文
摘要：
DescriptionExamine thecheckerboard below and note that the six checkers are arranged on the board so that one and only one is placed in each row and e... 阅读全文
摘要：
DescriptionAndrewid the Android is a galaxy-famous detective. In his free time he likes to think about strings containing zeros and ones.Once he thoug... 阅读全文