摘要：You are given a grid consisting of n rows each of which is dived into n columns. The rows are numbered from 1 to n from top to bottom, and the columns 阅读全文

摘要：给你一个n*n的格子的棋盘，每个格子里面有一个非负数。 从中取出若干个数，使得任意的两个数所在的格子没有公共边，就是说所取的数所在的2个格子不能相邻，并且取出的数的和最大。 Input包括多个测试实例，每个测试实例包括一个整数n 和n*n个非负数(n<=20)Output对于每个测试实例，输出可能取 阅读全文

摘要：Farmer John has purchased a lush new rectangular pasture composed of M by N (1 ≤ M ≤ 12; 1 ≤ N ≤ 12) square parcels. He wants to grow some yummy corn 阅读全文