surrounding
Add double quotes to surrounding a word/text
In VIM for VScode, how to add a pair of double or single quotes to surround an existing word/text/numebr? I've been writing R codes with VScode for ma ......
AtCoder Beginner Contest 149 F Surrounded Nodes
[洛谷传送门](https://www.luogu.com.cn/problem/AT_abc149_f "洛谷传送门") [AtCoder 传送门](https://atcoder.jp/contests/abc149/tasks/abc149_f "AtCoder 传送门") 不错的题。 考虑题 ......
hdu:surrounding the trees（凸包）
Problem Description There are a lot of trees in an area. A peasant wants to buy a rope to surround all these trees. So at first he must know the minim ......