iPlayForSG

差分

广度优先搜索 - BFS(2) 数论 - 素数(3) 未归档(1) 深度优先搜索 - DFS(1)

/ 注册

全部文章 / 差分（共1篇）

[CF739B] Alyona and a tree 详解

B. Alyona and a tree Alyona has a tree with n vertices. The root of the tree is the vertex 1. In each vertex Alyona wrote an positive integer, in the ...

2019-03-12

0 1379