摘要：Problem Description You are given a permutation a from 0 to n−1 and a permutation b from 0 to m−1.Define that the domain of function f is the set of i 阅读全文

摘要：Description Bob and Alice started to use a brand-new encoding scheme. Surprisingly it is not a Public Key Cryptosystem, but their encoding and decodin 阅读全文

摘要：Description We remind that the permutation of some final set is a one-to-one mapping of the set onto itself. Less formally, that is a way to reorder e 阅读全文