Description  meter long road between his house and the first shop and a d2 meter long road between his house and the second shop. Also, there is a road of length d3 directly connecting these two shops to each other. Help Patrick calculate the minimum…

Description After making bad dives into swimming pools, Wilbur wants to build a swimming pool in the shape of a rectangle in his backyard. He has set up coordinate axes, and he wants the sides of the rectangle to be parallel to them. Of course, the a…

http://acm.hust.edu.cn/vjudge/contest/view.action?cid=102271#problem/B Description Kevin Sun has just finished competing in Codeforces Round #334! The round was 120 minutes long and featured five problems with maximum point values of 500, 1000, 1500,…

http://acm.hust.edu.cn/vjudge/contest/view.action?cid=102271#problem/A Description Carl is a beginner magician. He has a blue, b violet and c orange magic spheres. In one move he can transform two spheres of the same color into one sphere of any othe…

http://acm.hust.edu.cn/vjudge/contest/view.action?cid=102271#problem/C Description After seeing the "ALL YOUR BASE ARE BELONG TO US" meme for the first time, numbers X and Y realised that they have different bases, which complicated their relati…

A. Patrick and Shopping Time Limit: 20 Sec Memory Limit: 256 MB 题目连接 http://codeforces.com/contest/599/problem/A Description Today Patrick waits for a visit from his friend Spongebob. To prepare for the visit, Patrick needs to buy some goodies in two…

题目地址 先简单的总结一下这次CF,前两道题非常的水,可是第一题又是因为自己想的不够周到而被Hack了一次(或许也应该感谢这个hack我的人,使我没有最后在赛后测试中WA).做到C题时看到题目情况非常复杂,明显超出自己现在水平,卡了很久也没有好好做题.等了很长时间才开始看D题,而这时信心已经严重不足.赛后再看D题才发现自己比赛时理解错了题意,致使误以为题目非常复杂.而实际上,这个过程分析起来是非常容易的. 对于三种棱长度分别为a,b,c的石头,r最大为min(a,b,c)/2;. 如果两个石头要…

CodeForces.158A Next Round (水模拟) 题意分析 校赛水题的英文版,坑点就是要求为正数. 代码总览 #include <iostream> #include <cstdio> #include <algorithm> #include <cstring> #include <sstream> #include <set> #include <map> #include <queue>…

这场比赛的出题人挺有意思,全部magic成了青色. 还有题目中的图片特别有趣. 晚上没打,开virtual contest打的,就会前三道,我太菜了. 最后看着题解补了第四道. 比赛传送门 A. Angry Students 题目大意:有t队学生,每个学生有两种状态,生气(A)或不生气(P).(话说为什么生气的戴着圣诞帽哇)所有生气的人都会往前一个人丢雪球,被丢到的人也会变得生气,也会丢雪球.问你每队人中最后一个学生变得生气的时刻. 这题就是统计最长的连续的'P'当然前提是左边有生气的人. 代码…

Codeforces 828B Black Square(简单题) Description Polycarp has a checkered sheet of paper of size n × m. Polycarp painted some of cells with black, the others remained white. Inspired by Malevich's "Black Square", Polycarp wants to paint minimum pos…