本文永久链接 https://www.lucien.ink/archives/208/ 环境   需要有git、python3，如果没有的话： Ubuntu sudo apt install git python3 -y CentOS sudo yum install git python3 -y 配置SSR 下载安装 sudo git clone https://git...

题目链接 https://codeforces.com/contest/975/problem/D 题目 Ghosts live in harmony and peace, they travel the space without any purpose other than scare whoever stands in their way. There are n ghost...

题目链接： https://codeforces.com/contest/975/problem/C 题目： Ivar the Boneless is a great leader. He is trying to capture Kattegat from Lagertha. The war has begun and wave after wave Ivar’s warrior...

题目链接： https://codeforces.com/contest/975/problem/B 题目： Mancala is a game famous in the Middle East. It is played on a board that consists of 14 holes. Initially, each hole has $a_i$ stones. W...

题目链接： https://codeforces.com/contest/975/problem/A 题目： In Aramic language words can only represent objects. Words in Aramic have special properties: A word is a root if it does not contain t...

题目链接： https://exam.upc.edu.cn/problem.php?id=5252 题目： 题目描述 Given a triangle ABC with incenter (center of its inscribed circle), I, and circumscribed circle O, let M, N and P be the second poin...

题目链接： https://exam.upc.edu.cn/problem.php?id=5247 题目： 题目描述 At some point or another, most computer science students have written a standard Sudoku solving program. This is yet another “put nu...

题目链接： https://codeforces.com/contest/976/problem/E 题目： Recently Max has got himself into popular CCG “BrainStone”. As “BrainStone” is a pretty intellectual game, Max has to solve numerous hard...

题目链接： https://codeforces.com/contest/976/problem/C 题目： You are given a sequence a1, a2, …, an of one-dimensional segments numbered 1 through n. Your task is to find two distinct indices i and ...

题目链接： https://codeforces.com/contest/976/problem/B 题目： You might have heard about the next game in Lara Croft series coming out this year. You also might have watched its trailer. Though you d...