说到这题还要提到周日下午训练赛,都进去了hmc说他这场单切过准备换一场. 很不幸的是我当时已经开了这个几何题, 开场就开几何是什么鬼啊!!! 给你n个圆,找一点在所有园内并且离原点最远.(保证有解) 我们肯定要援圆交啦!要素过多 其实我们可以大胆的猜测这个答案就在圆的交点上, 但是我们考虑到某种特殊情况,比方说只有一个圆,所以求一下原点与圆心的连线与圆的交点 再考虑到可能圆心就在原点上,特判一下,就ok了 // // Created by gtx1080 on 2019-04-23. // #i…

F. The Pool for Lucky Ones Time Limit: 20 Sec Memory Limit: 256 MB 题目连接 http://codeforces.com/gym/100637/problem/F Description A new swimming pool has been built in Kazan for the forthcoming Water Sports World Championship. The pool has N lanes. Some…

F. Doomsday Time Limit: 20 Sec Memory Limit: 256 MB 题目连接 http://codeforces.com/gym/100187/problem/F Description Doomsday comes in t units of time. In anticipation of such a significant event n people prepared m vaults in which, as they think, it will…

F. FloodTime Limit: 20 Sec Memory Limit: 256 MB 题目连接 http://codeforces.com/gym/100685/problem/F Description We all know that King Triton doesn't like us and therefore shipwrecks, hurricanes and tsunami do happen. But being bored with the same routine…

F. The Pool for Lucky Ones Time Limit: 20 Sec Memory Limit: 256 MB 题目连接 http://codeforces.com/gym/100637/problem/F Description A new swimming pool has been built in Kazan for the forthcoming Water Sports World Championship. The pool has N lanes. Some…

F. Ilya Muromets Time Limit: 20 Sec Memory Limit: 256 MB 题目连接 http://codeforces.com/gym/100513/problem/F Description I Ilya Muromets is a legendary bogatyr. Right now he is struggling against Zmej Gorynych, a dragon with n heads numbered from 1 to nf…

F. Ilya Muromets Time Limit: 20 Sec Memory Limit: 256 MB 题目连接 http://codeforces.com/gym/100513/problem/F Description I Ilya Muromets is a legendary bogatyr. Right now he is struggling against Zmej Gorynych, a dragon with n heads numbered from 1 to nf…

题目链接:http://codeforces.com/gym/100283/problem/F F. Bakkar In The Army time limit per test 2 seconds memory limit per test 256 megabytes input army.in output standard output Bakkar is now a senior college student studying computer science. And as many…

http://codeforces.com/gym/102058/problem/F 题意:平面上n个点  两个人轮流在任意两个点之间连一条线但是不能和已有的线相交,先围成一个凸多边形的获胜,先手赢还是后手赢. 解析:  当一个顶点连了两条边,那么就可以再画一笔组成三角形, 三个点  先手胜 四个点  先手胜 五个点  后手胜 ....... 画完一笔之后其实变成了两个子局面假设一边大小为 j  那么就分成了 j 和(n-j-2)两个局面 我们枚举 i 求出两部分的sg值 再用异或连接起来 就是…

http://codeforces.com/gym/100952/problem/F F. Contestants Ranking time limit per test 1 second memory limit per test 24 megabytes input standard input output standard output Ahmad is one of the best students in HIAST, and also a very good problems So…