Any resources about multiset hashing and related problem.
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Sometimes there are some problems where a number n is given and have to output the value of n'th number of some sequence. Like these problems: 1731B - Уничтожение демодогов 1822C - Любитель булочек 166E - Тетраэдр These problems are solvable with equations. I want to know how can we generate formula's for these types of problems .. Thanks in advanced .
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