USACO的 1.4.1 暴麻烦的……

一道Cryptcow折腾到现在(还没有过),据说从前时限5s,现在变成1s了,连LTY大牛的AC程序也过不去了……
尽可能的剪枝了……
USACO的机子怎么就那么慢 ……  我的机子1s就能过……

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