\[传送门qwq\] [题目描述] 给定一个正整数N,求最小的.比N大的正整数M,使得M与N的二进制表示中有相同数目的1. 举个例子,假如给定的N为78,其二进制表示为1001110,包含4个1,那么最小的比N大的并且二进制表示中只包含4个1的数是83,其二进制是1010011,因此83就是答案. [输入] 输入若干行,每行一个数n(1≤n≤1000000),输入"0"结束. [输出] 输出若干行对应的值. [输入样例] 1 2 3 4 78 0 [输出样例] 2 4 5 8 83 [

HDU 5572 An Easy Physics Problem (计算几何) 题目链接http://acm.hdu.edu.cn/showproblem.php?pid=5572 Description On an infinite smooth table, there's a big round fixed cylinder and a little ball whose volume can be ignored. Currently the ball stands still at p

An Easy Physics Problem Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/65536 K (Java/Others)Total Submission(s): 3845    Accepted Submission(s): 768 Problem Description On an infinite smooth table, there's a big round fixed cylinder an

An Easy Physics Problem Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/65536 K (Java/Others)Total Submission(s): 1430    Accepted Submission(s): 270 Problem Description On an infinite smooth table, there's a big round fixed cylinder an

题目链接:HDU 5572 Problem Description On an infinite smooth table, there's a big round fixed cylinder and a little ball whose volume can be ignored. Currently the ball stands still at point \(A\), then we'll give it an initial speed and a direction. If t

题意: 光滑平面,一个刚性小球,一个固定的刚性圆柱体 ,给定圆柱体圆心坐标,半径 ,小球起点坐标,起始运动方向(向量) ,终点坐标 ,问能否到达终点,小球运动中如果碰到圆柱体会反射. 学到了向量模板,写法简洁. #include<cstdio> #include<cstring> #include<algorithm> #include<iostream> #define clc(a,b) sizeof(a,b,sizeof(a)) #define LL l

2015上海区域赛现场赛第5题. 题目连接:http://acm.hdu.edu.cn/showproblem.php?pid=5572 题意:在平面上,已知圆(O, R),点B.A(均在圆外),向量V. 一个小球从A出发,沿速度向量V匀速前进,若撞到圆则发生弹性碰撞,沿“反射方向”继续匀速前进.问A点能否经过B点. 题目读懂了,把所有情况都考虑全,流程图就出来了,然后直接套模版即可(注意有些功能可剪裁~) 我的第一道计算几何,WA了一个星期啊...原因有姿势不对,精度不对,还有输出不对的. 不

[题目概述] On an infinite smooth table, there's a big round fixed cylinder and a little ball whose volume can be ignored. Currently the ball stands still at point A, then we'll give it an initial speed and a direction. If the ball hits the cylinder, it w

Description Determine the shortest path between the specified vertices in the graph given in the input data.Hint: You can use Dijkstra's algorithm.Hint 2: if you're a lazy C++ programmer, you can use set and cin/cout (with sync_with_stdio(0)) - it sh

计算几何的题做的真是少之又少. 之前wa以为是精度问题,后来发现是情况没有考虑全... 题目链接: http://acm.hdu.edu.cn/showproblem.php?pid=5572 题意: 给定起点A和方向V,路径中遇到圆柱体会发生折射,问能否到达终点B. 分析: 将路径表示为a+t∗v得到关于t的二元方程组,求出Δ. Δ小于等于0时,表示不会发生折射.直接判断ab是否共线. Δ大于0时,求出根. 根小于0说明路上不会发生折射,判断ab是否共线. 根大于等于0,仍然要判断ab是否共线

目录 @description@ @solution@ @accepted code@ @details@ @description@ 求: \[\sum_{i=1}^{n}\sum_{j=1}^{n}gcd^k(i, j)\times lcm(i, j)\times [gcd(i, j) \in prime] \mod 10^9 + 7 \] 原题传送门. @solution@ \[\begin{aligned} ans &= \sum_{i=1}^{n}\sum_{j=1}^{n}gcd^k

题意: 给你一个n个点m条边的图,对于第i条边,它的长度是2i,对于每一个顶点,它不是0类型,就是1类型.你需要找出来对于所有的"两个不同类型的点之间最短距离"的和 题解(参考:https://blog.csdn.net/wayne_lee_lwc/article/details/107851431): 因为20+21+22<23,即20+21+...+2n-1<2n 所以如果第i条边连接的两个点已经联通,我们就不需要用这条边.所以这里用并查集判断下 后面我们用 sum,以

As Easy As A+B Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others) Total Submission(s): 53368    Accepted Submission(s): 22939 Problem Description These days, I am thinking about a question, how can I get a problem as

Problem Description These days, I am thinking about a question, how can I get a problem as easy as A+B? It is fairly difficulty to do such a thing. Of course, I got it after many waking nights. Give you some integers, your task is to sort these numbe

As Easy As A+B Problem Description These days, I am thinking about a question, how can I get a problem as easy as A+B? It is fairly difficulty to do such a thing. Of course, I got it after many waking nights.Give you some integers, your task is to so

今天去老校区找她,不想带电脑了,所以没时间A题了 /*******************************************************************/ As Easy As A+B Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others)Total Submission(s): 45926    Accepted Submission(s): 196

As Easy As A+B Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others)Total Submission(s): 29901    Accepted Submission(s): 12789 Problem Description These days, I am thinking about a question, how can I get a problem as e

As Easy As A+B Problem Description These days, I am thinking about a question, how can I get a problem as easy as A+B? It is fairly difficulty to do such a thing. Of course, I got it after many waking nights. Give you some integers, your task is to s

我要举报本次校赛出题人的消极出题!!! 官方题解请戳:http://3.scnuacm2015.sinaapp.com/?p=89(其实就是一堆代码没有题解) A. 树链剖分数据结构板题 题目大意:我没看,看不懂. 基本思路:我不会. 参考代码:找Oyk老师和Czj老师去. B. The background of water problem 题目大意(大写加粗的水题):给定$N$个学生和他们$K$个科目的成绩$S_i$,再给出各科目$K_i$的权重顺序$Q_i$,求排名之后,拥有id为$X$的

描述 http://poj.org/problem?id=3068 危险品:N个仓库由M条有向边连接,每条边都有一定费用.将两种危险品从0运到N-1,除了起点和终点外,危险品不能放在一起,也不能走相同的路径.求最小费用. (好吧直接抄来的0.0) "Shortest" pair of paths Time Limit: 1000MS   Memory Limit: 65536K Total Submissions: 1220   Accepted: 493 Description A

Problem: Write an algorithm to determine if a number is "happy". A happy number is a number defined by the following process: Starting with any positive integer, replace the number by the sum of the squares of its digits, and repeat the process