Someone wrote in [personal profile] alixtii 2012-07-25 01:34 am (UTC)

beicYWPacmPi

这么说我是理解错题意了,不过原作者描述的不够清晰。。。如果短的字母里面有重复字符,应该也要在长串里面出现多次才行吧?所以Hash是必须的。不过Guy的问题谁能给点提示?- How can you optimize the mainppg of letters to primes?- Can you suggest a way to combine the prime representation with a bitmask to improve performance?还有出现多次的rack是啥意思?

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