DescriptionA tree that asks for the maximum sum of the root when the node is rooted.SolDfs+ tree-shaped DP.For the first time, count size and D.The second time transfer root, the statistical answer is OK.Code/************************************************************** problem:1131 User:beiyu language:c++ Result : Accepted time:8028 ms memory:78700 kb****************************************************************/#include L t;cstdio> #include Bzo
1131: [Poi2008]sta time
limit:10 Sec Memory limit:162 MBsubmit:783 solved:235[Submit] [Status]
DescriptionGive a tree of n points, find a point to the tree with this point as root, and the sum of the depths of all points is the maximumInputgives a number n, which represents n points. nOutputOutput the points you find, and if you have multiple solutions, output the one with the smallest number.Sample Input81 45 64 56 76 82 43 4Sample Output7HI
UV 10007 amp; hdu 1131 Count the Trees (catlands)
Count the Trees
Time Limit:3000 MS
Memory Limit:0 KB
64bit IO Format:% Lld % lluSubmitStatus
Description
Count the Trees
Another common social inability is known as ACM (Abnormally Compulsive Meditation ). this psychological disorder is somewhat common among programmers. it can be described as the temporary (although frequent) loss of the faculty of speech when the whole power
Test instructionsGive a tree of n points and find a point to make the sum of the depths of all points of the tree with this point as the root;nExercisesIn fact, when I do this problem, there is always a kind of inexplicable sense of what is going on ...Well, maybe I really did this problem ...The more violent is the enumeration of all points, and then deep search to accumulate all depth;But obviously all points are equal to the points of the parent tree + the sub-tree;So just ask for the two to
trees can is created, as shown in the figure.If you is able to provide a solution for this problem, Juan would be able to talk again, and his friends and family would b e forever grateful.Inputthe input would consist of several input cases, one per line. Each input case is specified by the number n (1≤n≤100) of different elements that must being used to form the tree S. A number 0 would mark the end of input and is not to be processed.Outputfor each input case print the number of binary trees t
HDU 1131 count the trees
The combination formula of Catalan numbers is Cn = C (2n, N)/(n + 1 );
The recursive formula for this number is H (n) = H (n-1) * (4 * N-2)/(n + 1)
One application of catlan:
The problem of making a binary tree for the top node.
How many different binary trees can a given n nodes constitute?
(Can constitute H (n)
But because every node is named, that is, every node is treated as different, so the number of each c
Input0.750.00010.01234567Sample Output0.75 [8] = 0.953125 [10]0.0001 [8] = 0.000244140625 [10]0.01234567 [8] = 0.020408093929290771484375 [10]SourceSouthern African 2001original title link: http://poj.org/problem?id=1131Test Instructions: Enter a 8-binary number less than 0 and convert it to 10 -binary.PS: Originally in the API to find the input is 8 binary method, but did not find!! Look at other people's Code on the net, indeed no! It's all analog, but much better than C + +.Conversion Mode:F
HDU 1131 Count the Trees large number calculation, hdu1131
The question is to give a number, and then use 1 to this number as the node of the binary tree. There are several methods to form the binary tree. This question is to use the catlan number to calculate the number, and then because there is a number, different numbers correspond to different methods, so the result is the catlan number multiplication method of this number. Because the numbers ar
one row. If a given word is found in the article, two integers are output, which are separated by a space, the number of times the word appears in the article and the position where it appears for the first time (that is, when the first word appears in the article, the position of the first letter in the article starts from 0 ); if a word does not appear in an article, an integer-1 is output directly.Sample Input
Sample Input
Input 1:
To
To be or not to be is a question
Input 2:
To
Did the Ott
// Poj 1131 Al fractions decimal conversion between any hexadecimal notation// You must convert an octal decimal point to a decimal point,// The number of decimal places after conversion is three times the number of decimal places in the first eight decimal places before conversion, and no meaningless zero at the end is output (that is, the post zero ).// The method I used is to multiply 10 and then get an integer for 8 (now we assume that the decimal
Label: bzoj bzoj1131 tree DP Given a rootless tree with N points, you must find a root node to maximize the sum of depth. Make f [x] the sum of the depths of the subtree rooted in X First, we can find any node for deep search to calculate the size of each subtree and the sum of the depth of all vertices. Then, search the node for the root node. The State is transferred from the parent node to the child node. The transfer equation is as follows: When we change the root node from 4 nodes to
1131. Subway Map (a)Time limit MS
Memory Limit 65536 KB
Code length limit 16000 B
Standard author CHEN, Yue
In the "big cities", the subway systems always look and so complex to the visitors. To give you some sense, the following figure shows the map of Beijing subway. Now, are supposed to help people with your computer skills! Given the starting position of your user, your task is to find the quickest way to his/her.
Input Specification:
Each input
1131. Subway Map ($)The big cities, the subway systems always look so complex to the visitors. To give your some sense, the following figure shows the map of Beijing Subway. Now is supposed to help people with your computer skills! Given the starting position of your user, your task is to find the quickest-to his/her.
Input Specification:
Each input file contains the one test case. For each case, the first line contains a positive integer N ( line in
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A few days ago the user called to say that the administrative building wireless network is not good use, all the APS are bright red! Very strange, because the day before the use is normal, how all the bad use it? Rushed to the user site login WLC, found on the WLC a lot less APS, and these APs are 1131, the other models of 1142, 1602 are working properly, is it really bad?View WLC log, see log, Trance Remember to see an article, said is AP because use
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