摘要：
Let's define the Fibonacci sequence \(F_1,F_2,\dots\) as \(F_1=1,F_2=2,F_i=F_{i-1}+F_{i-2}\) (\(i\geq 3\)). It's well known that every positive intege 阅读全文
摘要：
Lead of Wisdom In an online game, "Lead of Wisdom" is a place where the lucky player can randomly get powerful items. There are k types of items, a pl 阅读全文