摘要：Problem DescriptionConsider a binary operation ☆ defined on digits 0 and 1, 0 if the two operand are equal, 1 if they differ. A binary operation ⊙ is a generalization of ☆to positive integers, The result of a⊙b is defined in the following way: aligning the binary code of b under the binary 阅读全文

摘要：Problem DescriptionDo you remember a sentence "Accepted today?" Yes, the sentence is mentioned frequently in lcy's course "ACM Programming"! The contest is still in progress this moment. How excited it is! You, smart programmer, must have AC some problems today. "Can I g 阅读全文