题目大意是在1991.1.1-2001.11.4中抽取一个日期，可以对其进行两种操作，月+1或日+1，将其变为2001.11.4时游戏即结束，问先手有无必胜策略。
除了9.30和11.30外，其它日期对其进行任何一个操作都会改变其（月+日）的奇偶性。由于目标状态的（月+日）为奇，所以除上述两个状态外（月+日）为偶的都是先手必胜态。9.30和11.30都可以转化为必败态（10.1和12.1），所以其自身即为必胜态。
1653402 2008-10-01 22:35:27 Accepted 1024 FPC 0 112 IwfWcf
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