拉姆齐(Ramsey)定理是要解决以下的问题:要找这样一个最小的数n,使得n个人中必定有k个人相识或l个人互不相识 我们所知道的结论是这样的 6 个人中至少存在3人相互认识或者相互不认识. 该定理等价于证明这6个顶点的完全图的边,用红.蓝二色任意着色,必然至少存在一个红色边三角形,或蓝色边三角形 HDU6152 给出 n 个人之间的关系,如果其中有三个人互相认识或者互相不认识,则输出 Bad Team! ,否则输出 Great Team! 当人数大于等于 6 时其结果一定是 Bad Team!
Zball in Tina Town Time Limit: 3000/1500 MS (Java/Others) Memory Limit: 262144/262144 K (Java/Others) Problem Description Tina Town is a friendly place. People there care about each other. Tina has a ball called zball. Zball is magic. It grows lar
Friend-Graph Time Limit: 10000/5000 MS (Java/Others) Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 3072 Accepted Submission(s): 1334 Problem Description It is well known that small groups are not conducive of the development of
There are N gas stations along a circular route, where the amount of gas at station i is gas[i]. You have a car with an unlimited gas tank and it costs cost[i] of gas to travel from station i to its next station (i+1). You begin the journey with an e
w https://en.wikipedia.org/wiki/Ramsey's_theorem https://zh.wikipedia.org/wiki/拉姆齐定理 在组合数学上,拉姆齐(Ramsey)定理,又称拉姆齐二染色定理,是要解决以下的问题:要找这样一个最小的数n,使得n个人中必定有 k 个人相识或 l 个人互不相识. 这个定理以弗兰克·普伦普顿·拉姆齐命名,1930年他在论文On a Problem in Formal Logic(<形式逻辑上的一个问题>)证明了R(3,3)=6