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这题测试数据是不是有误?!

Posted by hongtaos at 2007-12-06 10:22:11 on Problem 2159

根据这句:
Substitution cipher changes all occurrences of each letter to some other letter. Substitutes for all letters must be different.

就是说一个字符一定是替换成另外一个字符, 而不能A替换成A.

就是说下面的数据肯定是NO:
AABBB
AABBB,

显然, judge时判断它为YES了!

Followed by:

反正要把题意理解为既可以组合，也可以替换，也可以什么都不做，才能过。WA了n次才明白。 (0) piaolingqingsi 2008-01-24 11:15:15

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