K. Let the Flames Begin 题目链接:https://codeforces.com/gym/101955/problem/K 题意: n个人围成一个圈,然后依次从1开始报数,报到k的人出局,现在有个人,他想要成为第m个出局的男人,现在要求他初始位置应该在哪. 题解: 类似于约瑟夫环问题,所以我们可以考虑一下递推.我们可以考虑一下n和n - 1规模的关系,借助于约瑟夫环的思路,我们可以知道,如果一个人在n - 1规模时位置为p,那么n的规模时位置应为(p + k) % n (下
Problem Description Consider a un-rooted tree T which is not the biological significance of tree or plant, but a tree as an undirected graph in graph theory with n nodes, labelled from 1 to n. If you cannot understand the concept of a tree here, plea
Meeting Time Limit: 12000/6000 MS (Java/Others) Memory Limit: 262144/262144 K (Java/Others)Total Submission(s): 6865 Accepted Submission(s): 2085 Problem Description Bessie and her friend Elsie decide to have a meeting. However, after Farmer Jo
Infinite Fraction Path Time Limit: 6000/3000 MS (Java/Others) Memory Limit: 262144/262144 K (Java/Others)Total Submission(s): 5756 Accepted Submission(s): 1142 Problem Description The ant Welly now dedicates himself to urban infrastructure. He
Plants vs. Zombies Time Limit: 2 Seconds Memory Limit: 65536 KB BaoBao and DreamGrid are playing the game Plants vs. Zombies. In the game, DreamGrid grows plants to defend his garden against BaoBao's zombies. Plants vs. Zombies(?) (Image from pi
F. The Answer to the Ultimate Question of Life, The Universe, and Everything. 我的第一道真·打表题 这次是真的打表啊,不是初始化求值! 重现赛的时候,一直在搞在线的做法,map和unordered_map都上了,都是TLE,初始化建立两个map,然后枚举a,b再找是否有c,我算的复杂度也就 O(T*5000*10000/2)? 2e8?好像确实得T.实际复杂度或许更高 ? unordered_map内部哈希表实现,
Tree Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 262144/262144 K (Java/Others)Total Submission(s): 373 Accepted Submission(s): 254 Problem Description Consider a un-rooted tree T which is not the biological significance of tree or plan
Infinite Fraction Path Time Limit: 6000/3000 MS (Java/Others) Memory Limit: 262144/262144 K (Java/Others)Total Submission(s): 1262 Accepted Submission(s): 224 Problem Description The ant Welly now dedicates himself to urban infrastructure. He c
Hello everyone! I am your old friend Rikka. Welcome to Xuzhou. This is the first problem, which is a problem about the minimum spanning tree (MST). I promise you all that this should be the easiest problemeasiest problem for most people. A minimum sp
P2 : Heshen's Account Book Time Limit:1000ms Case Time Limit:1000ms Memory Limit:512MB Description Heshen was an official of the Qing dynasty. He made a fortune which could be comparable to a whole country's wealth by corruption. So he was known as t
P1 : Jin Yong’s Wukong Ranking List Time Limit:1000ms Case Time Limit:1000ms Memory Limit:512MB Description Jin Yong was the most famous and popular Chinese wuxia (The one who fight bad people by his Wukong i.e. Wushu and Kongfu) novelist who lived i