[ACM Collegiate PC 2011] Hunan
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夜晚做了下UVA上的湖南省赛
LRJ的题目,风格未变,好题还是有的,就是很杂
A 送分题
B 暴力
C 暴力,把所有的位置vector排序
D 还是暴力,写起来DT,没写
E 简单博弈,必败态为2^n - 1
F 挺不错的DP,观察到p > 100 是没有意义的
加法越早越好,直接加上
乘法由于p <= 100,所以最多需要7次,用这些dp就可以了
G 带优先队列BFS,把下面的折到上面去
H 切蛋糕,和上次多校题差不多,几何题无视
I 不会啊不会,天王讲了一个DP方法,好复杂啊好复杂
J 还是不会啊不会,那个大数据只有一组很挑衅人啊
UPD:此题貌似是很裸的FFT,FT...
K 线段树,暴力shift就好了
You see,我还是只会做水题,哎
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