摘要：
Problem Description Pass a year learning in Hangzhou, yifenfei arrival hometown Ningbo at finally. Leave Ningbo one year, yifenfei have many people to 阅读全文
摘要：
Problem Description 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 阅读全文
摘要：
Description Bessie hears that an extraordinary meteor shower is coming; reports say that these meteors will crash into earth and destroy anything they 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， 阅读全文
摘要：
Problem Description There is a rectangular room, covered with square tiles. Each tile is colored either red or black. A man is standing on a black til 阅读全文
摘要：
Description 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 阅读全文