摘要:
V -Regular WordsTime Limit:1000MSMemory Limit:32768KB64bit IO Format:%I64d & %I64uSubmitStatusPracticeHDU 1502DescriptionConsider words of length 3n over alphabet {A, B, C} . Denote the number of occurences of A in a word a as A(a) , analogously let the number of occurence... 阅读全文
posted @ 2013-08-12 15:23
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