A. Amity Assessment time limit per test2 seconds memory limit per test256 megabytes inputstandard input outputstandard output Bessie the cow and her best friend Elsie each received a sliding puzzle on Pi Day. Their puzzles consist of a 2 × 2 grid and…

简单模拟. #pragma comment(linker, "/STACK:1024000000,1024000000") #include<cstdio> #include<cstring> #include<cmath> #include<algorithm> #include<vector> #include<map> #include<set> #include<queue> #in…

题目链接: http://codeforces.com/problemset/problem/645/A 题意: 2*2的八数码问题 分析: 这题n为2,不需要搜索,直接判断字母排列顺序就好了. 注意,如果n为奇数,直接看逆序数是否相同. 代码: #include<iostream> #include<cstring> using namespace std; int f(string s1, string s2) { int posa, posc; swap(s2[0], s2[…

思维题--code forces round# 551 div.2 题目 D. Serval and Rooted Tree time limit per test 2 seconds memory limit per test 256 megabytes input standard input output standard output Now Serval is a junior high school student in Japari Middle School, and he is…

A. Amity Assessment 题目连接: http://www.codeforces.com/contest/655/problem/A Description Bessie the cow and her best friend Elsie each received a sliding puzzle on Pi Day. Their puzzles consist of a 2 × 2 grid and three tiles labeled 'A', 'B', and 'C'.…

题目链接: A. Amity Assessment time limit per test 2 seconds memory limit per test 256 megabytes input standard input output standard output Bessie the cow and her best friend Elsie each received a sliding puzzle on Pi Day. Their puzzles consist of a 2 × …

Code Forces 796C Bank Hacking 题目大意 给一棵树,有\(n\)个点,\(n-1\)条边,现在让你决策出一个点作为起点,去掉这个点,然后这个点连接的所有点权值+=1,然后再将这些刚刚加过一的点的相邻的点的权值+=1 也就是说,除了与根节点相邻的点+=1,其余点+=2 然后求最大集合的最小点权 solution 一看是要求最大的的最小值,首先想到的就是二分,显然想到这个目前没有什么卵用,二分是用来卡最佳答案的,所以使用二分的前提是要给它一个范围去选择,那么现在的任务就是…

Code Forces 833 A The Meaningless Game 题目大意 有两个人玩游戏,每轮给出一个自然数k,赢得人乘k^2,输得人乘k,给出最后两个人的分数,问两个人能否达到这个分数 不得不吐槽一下那么长的英文题面翻译完只有一句话-- solution 也很好想叭 乘积开立方判断是否为两个数的因数 如果是的话,显然不成立 否则输出Yes即可 #include <iostream> #include <cstring> #include <cstdio>…

题目描述 Programmers working on a large project have just received a task to write exactly mm lines of code. There are nn programmers working on a project, the ii -th of them makes exactly a_{i}ai​ bugs in every line of code that he writes. Let's call a…

Arpa's loud Owf and Mehrdad's evil plan time limit per test 1 second memory limit per test 256 megabytes input standard input output standard output As you have noticed, there are lovely girls in Arpa's land. People in Arpa's land are numbered from 1…