2012年9月4日

（Codeforces Round #136 (Div. 2)）A. Little Elephant and Function(递归分析，简单)

摘要： A. Little Elephant and Functiontime limit per test2 secondsmemory limit per test256 megabytesinputstandard inputoutputstandard outputThe Little Elephant enjoys recursive functions.This time he enjoys the sorting function. Let a is a permutation of an integers from 1 to n, inclusive, and ai denotes t 阅读全文

posted @ 2012-09-04 21:44 铁树银花 阅读(302) 评论(0) 推荐(0) 编辑

Red and Black（DFS入门题）

摘要： Red and BlackTime Limit: 2000/1000 MS (Java/Others)Memory Limit: 65536/32768 K (Java/Others)Total Submission(s): 4260Accepted Submission(s): 2766原题链接：点击打开链接Problem DescriptionThere is a rectangular room, covered with square tiles. Each tile is colored either red or black. A man is standing on a blac 阅读全文

posted @ 2012-09-04 20:42 铁树银花 阅读(262) 评论(0) 推荐(0) 编辑

Tempter of the Bone（DFS + 奇偶剪枝，好题）

摘要： Tempter of the BoneTime Limit: 2000/1000 MS (Java/Others)Memory Limit: 65536/32768 K (Java/Others)Total Submission(s): 39780Accepted Submission(s): 10761原题链接：点击打开链接Problem DescriptionThe doggie found a bone in an ancient maze, which fascinated him a lot. However, when he picked it up, the maze began 阅读全文

posted @ 2012-09-04 17:04 铁树银花 阅读(719) 评论(0) 推荐(0) 编辑

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