Let L denote the number of 1s in integer D's binary representation. Given two integers S1 and S2, we call D a XHY number if S1≤L≤S2. With a given D, we would like to find the next XHY number Y, which is JUST larger than D. In other words, Y is the sm…

队名:Unlimited Code Works(无尽编码)  队员:Wu.Wang.Zhou 先说一下队伍:Wu是大三学长:Wang高中noip省一:我最渣,去年来大学开始学的a+b,参加今年区域赛之前只学了大部分图论内容,以及一些数据结构.动态规划等内容,水平不及两个队友... ... 首先流水账式的记录一下比赛过程吧,最后再写这一年的感想.体会与将来的学习计划. 先从长春站说起... ... 长春站是我加入ACM以来参加的第一场ICPC,因此无比的激动!从杭州出发,乘了整整24小时的火车,终…

球队内线我也总水平,这所学校得到了前所未有的8地方,因为只有两个少年队.因此,我们13并且可以被分配到的地方,因为13和非常大的数目.据领队谁oj在之上a谁去让更多的冠军.我和tyh,sxk,doubleq运的在大二就有机会參加亚洲现场赛,非常激动.牡丹江赛区是我和sxk和doubleq组成rainbow战队,我们对这次区域赛事实上就是去张张见识,添加大赛经验(外加公费旅游2333),但是当我们真正来到赛场的时候不知道为上面我非常渴望拿一块牌子. 第一天热身赛,double迅速切下水题.我一直再…

题意: 给你数字或 * 的串,你可以交换一个*和数字.在最前面添1.在一个地方插入*,问你使串满足入栈出栈的(RNP)运算法则. 思路: 引用:https://blog.csdn.net/u011580493/article/details/40077119 由于一个 * 能消除2个数字,然后生成一个数字.因此首先要保证数字个数大于等于 ‘*’ 个数+1. 如果数字个数不够,就在最前面添加. 然后开始从头开始遍历,遇到*就看当前的数字个数是否有两个或以上.不够的话,从最后面开始找第一个不是‘*’…

131072K   A digit sum S_b(n)Sb​(n) is a sum of the base-bb digits of nn. Such as S_{10}(233) = 2 + 3 + 3 = 8   S10​(233)=2+3+3=8, S_{2}(8)=1 + 0 + 0 = 1S2​(8)=1+0+0=1, S_{2}(7)=1 + 1 + 1 = 3S2​(7)=1+1+1=3. Given NN and bb, you need to calculate \sum_…

Known Notation Time Limit: 2 Seconds      Memory Limit: 65536 KB Do you know reverse Polish notation (RPN)? It is a known notation in the area of mathematics and computer science. It is also known as postfix notation since every operator in an expres…

Problem Description Coach Pang is interested in Fibonacci numbers while Uncle Yang wants him to do some research on Spanning Tree. So Coach Pang decides to solve the following problem:Consider a bidirectional graph G with N vertices and M edges. All…

题意: 有一排n个石子(注意n可以为0),每次可以取1~K个连续的石子,Adrien先手,Austin后手,若谁不能取则谁输. 思路: (1) n为0时的情况进行特判,后手必胜. (2) 当k=1时,很容易可以发现:若n为偶数则后手赢,n为奇数则先手赢. (3) 当k>1时,只要先手保证这一排石子两边对称,则后手必败,所以可知k>1时先手必胜. #include<bits/stdc++.h> using namespace std; int main() { ios::sync_w…

Hello everyone! I am your old friend Rikka. Welcome to Xuzhou. This is the first problem, which is a problem about the minimum spanning tree (MST). I promise you all that this should be the easiest problemeasiest problem for most people. A minimum sp…

Problem Description Consider a un-rooted tree T which is not the biological significance of tree or plant, but a tree as an undirected graph in graph theory with n nodes, labelled from 1 to n. If you cannot understand the concept of a tree here, plea…