by 0htoAi,写于2021.8.14
There are n×n cells on a grid, the top-left cell is at (1,1) while the bottom-right cell is at (n,n). You start at (1,1) and ......
题干
You are given a tree consisting of \(n\) vertices. A tree is a connected undirected graph with \(n−1\) edges. Each vertex \(v\) of this tree has ......
Problem Description
YJQQQAQ has an array A of
length n.
He defines a function fl,r,k where l,r,k are
positive integers that satisfies l≤r and r×k≤ ......