2008年8月7日星期四

ZJU/ZOJ 1893 A Multiplication Game 解题报告

题目大意是从1开始两个人轮流乘上2-9中的一个数,最先使结果>=n的获胜,假设两人均采取最优策略,问谁有获胜。

经典的博弈问题,以n=1000为例,若占住999到112,则对手必胜。必须让对手占领此段。如果56被对手占住,入必败段。问题转化成为占56。以此类推,程序实现就是不断除9除2一直到n<=1。

3026876 2008-08-07 18:25:30 Accepted 1893 FPC 00:00.00 408K IwfWcf

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