Content 有 \(n\) 名选手参加一个比赛,有 \(m\) 个人为他们投票.第 \(i\) 个人的投票情况用一个长度为 \(n\),并且仅包含 . 和 X 两个字符的字符串,其中,如果第 \(j\) 位是 X,则第 \(i\) 个人将票投给了第 \(j\) 名选手,否则没有.规定每个投票者能且仅能将票投给一个人,否则都算无效票(即投的票数 \(\geqslant 2\) 或者 \(=0\)).请将每名选手按照他们所得到的票的比例排序(如果有两名选手得到的票的比例相同,在投票次序中先出现的…

Ballot Analyzing Device 题目连接: http://codeforces.com/gym/100269/attachments Description Election committee of Flatland is preparing for presidential elections. To minimize human factor in ballot counting they decided to develop an automated Ballot Ana…

题目链接:http://acm.hnu.cn/online/?action=problem&type=show&id=12845&courseid=270 解题报告:有m个认给n个人投票,n个认位置是固定的,输入一行字符,X表示会投给这个人,例如X....这个表示会投给第一个人,然后让你分别求出这n个人分别占总 票数的百分之几,如果两个人票数相同,则按照原来固定的顺序. 水题,注意任意一个人投的票要有效的话必须满足至少并且只能投一个人. #include<cstdio>…

Problem A. Arrangement of Contest 题目连接: http://codeforces.com/gym/100269/attachments Description Little Dmitry and little Petr want to arrange a contest. Their little friends submitted several task proposals and now Dmitry and Petr want to select som…

---------- HDU 5288 OO’s Sequence 题意 给定一个数列(长度<$10^5$),求有多少区间[l,r],且区间内有多少数,满足区间内其它数不是他的约数. 数的范围$[1,10000]$.结果对$10^9+7$取模. Solution 首先可以预处理每个数的约数有哪些.对每个数存下它的位置有哪些. 然后可以枚举每一个位置,利用二分找到左边第一个是它约数的数,和右边第一个是他约数的数. 假设向左有L个数,向右有R个数.那么ans应该加上(L*R). 时间复杂度$O(n*…

While developing your application, you should check that user interactions are buttery smooth, running at a consistent 60 frames per second. If something goes wrong, and a frame gets dropped, the first step in fixing the problem is understanding what…

Analyzing Crash Reports After you distribute your app for testing by using TestFlight or after you make it available on the store, routinely download and analyze crash reports. When an app crashes, the system creates a crash log that describes the co…

Tricks Device 题目连接: http://acm.hdu.edu.cn/showproblem.php?pid=5294 Description Innocent Wu follows Dumb Zhang into a ancient tomb. Innocent Wu's at the entrance of the tomb while Dumb Zhang's at the end of it. The tomb is made up of many chambers, th…

首先是几份模版 最大流:虽然EK很慢但是优势就是短.求最小割的时候可以根据增广时的a数组来判断哪些边是割边.然而SAP的最大流版我只会套版,并不知道该如何找到这个割边.在尝试的时候发现了一些问题.所以暂且搁下.这个问题目前先就EK把 struct Edge { int u,v,next; LL cap,flow; }edge[MAXM]; int head[MAXN],tot; void add_edge(int u,int v,LL cap) { edge[tot].u = u; edge[t…

Analyzing UI Performance with Systrace In this document Overview 简介 Generating a Trace  生成Systrace文件(html) Tracing on Android 4.3 and higher   4.3以上 Tracing on Android 4.2 and lower    4.2以下 graphical user interface               用工具生成Systrace 文件 Ana…