摘要：F - Not Adjacent Problem Statement You are given a length-$N$ integer sequence $A=(A _ 1,A _ 2,\ldots,A _ N)$. There are $2 ^ N$ (not necessarily cont 阅读全文

摘要：F - Clearance Problem Statement AtCoder Inc.'s online shop currently handles $N$ products, and the stock of product $i$ is $A_i$ units remaining. Proc 阅读全文