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Re:如何暴力计算??样例一直过不了....In Reply To:Re:如何暴力计算??样例一直过不了.... Posted by:huicpc1117 at 2009-02-23 19:02:27 > 就是这样,但是有一点,那7^4个状态不是等概率的!对每个骰子来说,有一个面是红色的概率是 > C(1,6)*(0.5)^6,只考虑相对的,用C(1,6)就可以了,否则太小了可能有精度问题。 > 这样,对于(a[1],a[2],a[3],a[4])这个骰子的状态,应该再加的权是 > C(a[1],6)*C(a[2],6)*C(a[3],6)*C(a[4],6), 是否还应乘以这种状态能够产生输入给出的两个得分的概率?? >最后归一化就可以了 Followed by:
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