大意: 给定$n$个凸多边形, $q$个询问, 求$[l,r]$内闵可夫斯基区间和的顶点数. 要用到一个结论, 闵可夫斯基和凸包上的点等于向量种类数. #include <iostream> #include <algorithm> #include <cstdio> #include <queue> #include <map> #define REP(i,a,n) for(int i=a;i<=n;++i) #define pb pus…

题目描述: Malek Dance Club time limit per test 1 second memory limit per test 256 megabytes input standard input output standard output As a tradition, every year before IOI all the members of Natalia Fan Club are invited to Malek Dance Club to have a fu…

Camping Groups 题目连接: http://codeforces.com/problemset/problem/173/E Description A club wants to take its members camping. In order to organize the event better the club directors decided to partition the members into several groups. Club member i has…

A. Kyoya and Photobooks Time Limit: 20 Sec Memory Limit: 256 MB 题目连接 http://codeforces.com/contest/554/problem/A Description Kyoya Ootori is selling photobooks of the Ouran High School Host Club. He has 26 photos, labeled "a" to "z", a…

题目链接: http://codeforces.com/problemset/problem/208/A A. Dubstep time limit per test:2 secondsmemory limit per test:256 megabytes 问题描述 Vasya works as a DJ in the best Berland nightclub, and he often uses dubstep music in his performance. Recently, he…

A. Wizards and Trolleybuses Time Limit: 20 Sec Memory Limit: 256 MB 题目连接 http://codeforces.com/contest/167/problem/A Description In some country live wizards. They love to ride trolleybuses. A city in this country has a trolleybus depot with n trolle…

A. Kyoya and Photobooks Kyoya Ootori is selling photobooks of the Ouran High School Host Club. He has 26 photos, labeled "a" to "z", and he has compiled them into a photo booklet with some photos in some order (possibly with some photo…

http://codeforces.com/contest/1139 A. Even Substrings You are given a string s=s1s2…sns=s1s2…sn of length nn, which only contains digits 11, 22, ..., 99. A substring s[l…r]s[l…r] of ss is a string slsl+1sl+2…srslsl+1sl+2…sr. A substring s[l…r]s[l…r] …

地址:http://codeforces.com/contest/782/problem/D 题目: D. Innokenty and a Football League time limit per test 2 seconds memory limit per test 256 megabytes input standard input output standard output Innokenty is a president of a new football league in B…

G. I love Codeforces 题目大意:给你n个字符串,以及m个喜欢关系,如果u喜欢v,这时候u会把它的用户名改为 I_love_ 加上v当时的用户名 Examples input 5anonymousnataliaLeBronTanya_RomanovaMikeMirzayanov61 23 42 14 31 43 2 output Copy I_love_I_love_I_love_Tanya_Romanova 思路: SB模拟题,纯模拟会出MLE,RE,TLE等锅,只需要记录每…