Question: For N positions, the probability pI of O occurrence at each position on 1-N is given. The scoring rules are as follows. x consecutive OSS records are x ^ 2 points, and the sum is calculated. For example, xxoooxooxx scores are as follows: Expected score Think about it. We can easily obtain the O (N ^ 2) method. Make DP [I] The expected score of the former I So Obviously, this question Consider how to change the score We have Then the scoring method becomes Number of c
Expected DP
Set \ (G [I] \) to the expected length of the first 1 consecutive, \ (H [I] \) the expectation of the square of the first I consecutive 1, \ (F [I] \) indicates the expected score of the first I
Based on the expected linear nature, we can consider adding a contribution to the answer in statistics.\ [E (x + 1) ^ 3)-E (x ^ 3) = E (3x ^ 2 + 3X + 1) \]Then, recursive statistics are enough.
# Include
P1654 Osu!
Long time no more, take a bubble, water one question
#include
#include
#include
#include
using namespace std;
const double eps=1e-9;
struct point
{
double x,y;
int t;
Point () {} point
(int t,double x,double y): t (t), X (x), Y (y) {}
}
In a sequence, there is only O, X, and the score is the sum of the square of the length of each o block. input the probability that O appears at each position and obtain the expected score.
Reference: http://codeforces.com/blog/WJMZBMR
# Include
3450:tyvj1952 Easy Time
limit:10 Sec Memory limit:128 MBsubmit:468 solved:353[Submit] [Status] [Discuss]
DescriptionOne day WJMZBMR is playing osu~~~ but he is too weak to push, some places entirely by luck: (Let's simplify the rules of the game.Have n click to do, success is O, failure is x, score is calculated according to comb, continuous a comb there is a*a points, comb is a great continuous o.Like Ooxxxxooooxxx, the score is 2*2+4*4=4+16
containing two integers A and B, denoting there is an edge between node A and Node B.
T Your answer will be accepted if its absolute error doesn't exceed 1e-5. [sample input] 25 10 1001 22 33 44 51 52 52 51 41 310 10 101 22 33 44 55 66 88 99 104 9 [sample output] Quit
Question]
Random random... in an undirected graph, a starting point is randomly selected, and each subsequent step is equal probability. Some vertices cannot be reached, which requires the probability that each vertex cannot be re
BZOJ 3450: Tyvj1952 Easy, bzojtyvj1952
Time Limit: 10 Sec Memory Limit: 128 MB
Submit: 874 Solved: 646
[Submit] [Status] [Discuss]
Description
One day, WJMZBMR is playing osu ~~~ But he is too weak, and in some places he depends entirely on luck :(Let's simplify the rules of this game.There are n clicks to do. If the operation succeeds, it is o. If the operation fails, it is x. The score is calculated by comb. For a consecutive comb, there is a *
and a flash suitable for transparent effect, then open a new webpage in Dreamweaver, insert a row and a columnCell. The cell size is the same as the width and height of the prepared image. Then, set the image as the background image of the cell. After the settings are complete, insert a limit in the cell.Flash has been prepared, and the flash size should be adjusted to the same size as the cell. Select flash with the mouse, and change the webpage editing status from "design"Switch to "code, you
limit in the cell.
Flash has been prepared, and the flash size should be adjusted to the same size as the cell. Select flash with the mouse, and change the webpage editing status from "design"
Switch to "code, you will see that the flash part has turned black in the source code, the code example is as follows: [Url] http://download.macromedia.com/pub/shockwave/cabs/flash/swfl#/url]
Ash. cab # version = 6, 0, 470 "width =" 180 "height =" ">
Pluginspag
Code
Code highlighting produced by Actipro CodeHighlighter (freeware)http://www.CodeHighlighter.com/-->
Problem:By setting the Z-index of the DIV layer and flash layer, the DIV layer cannot overwrite the flash layer.Official explanation:A flash movie in a layer on a DHTML page containing several layers may display abve all the layers, regardless of the stacking order("Z-index") of those layers.Solution:1. Modify flash attributes, applicable to Firefox and IEIn this solution, you need to modify
the posture ... Nest hurriedly to Zrt and sqy make quick walk gesture ..... The eldest brother Chase up, "Do not buy also can look at Ah, come on quickly go in Ah" .... The nest ignored him to continue to let Zrt and sqy go straight ahead ... That's how the eldest brother chased almost 20 meters to give up = = ...Mom, this is really the middle of the village?!Then we continued to turn around and found that as long as it is the place to sell mobile computers, the door has a few big Brother = = a
"BZOJ3450" Tyvj1952 easydescriptionOne day WJMZBMR is playing osu~~~ but he is too weak to push, some places entirely by luck: (Let's simplify the rules of the game.Have n click to do, success is O, failure is x, score is calculated according to comb, continuous a comb there is a*a points, comb is a great continuous o.Like Ooxxxxooooxxx, the score is 2*2+4*4=4+16=20.Sevenkplus Idle panic To see he played a plate, some places have nothing to do with lu
Description
One day WJMZBMR is playing osu~~~ but he is too weak to push, some places entirely by luck: (Let's simplify the rules of the game.Have n click to do, success is O, failure is x, score is calculated according to comb, continuous a comb there is a*a points, comb is a great continuous o.Like Ooxxxxooooxxx, the score is 2*2+4*4=4+16=20.Sevenkplus Idle panic To see he played a plate, some places have nothing to do with luck either O or x, s
Title DescriptionOne day WJMZBMR is playing osu~~~ but he is too weak to push, some places entirely by luck: (Let's simplify the rules of the game.Have n click to do, success is O, failure is x, score is calculated according to comb, continuous a comb there is a*a points, comb is a great continuous o.Like Ooxxxxooooxxx, the score is 2*2+4*4=4+16=20.Sevenkplus Idle panic To see he played a plate, some places have nothing to do with luck either O or x,
3450:tyvj1952 Easy Time
limit:10 Sec Memory limit:128 MBsubmit:431 solved:325[Submit] [Status] [Discuss]
DescriptionOne day WJMZBMR is playing osu~~~ but he is too weak to push, some places entirely by luck: (Let's simplify the rules of the game.Have n click to do, success is O, failure is x, score is calculated according to comb, continuous a comb there is a*a points, comb is a great continuous o.Like Ooxxxxooooxxx, the score is 2*2+4*4=4+16
Advertising | Web page
One, with the title of the article
without article title (playswf.swf)
Sina Flash advertising with article title (pixviewer.swf)var focus_width=277
var focus_height=200
var text_height=20
var swf_height = Focus_height+text_height
var pics= ' Picture Address | | Picture address | picture Address | picture Address four | picture address five '
var links= ' link address | link two | link address | link address
var texts= ' text title one | text Title two | text Title three |
Problem description: a hotel reservation website that the company cooperates with requires advertisement on the page, but the other party gives a flash file and requires a link to its homepage. Directly add
Solution Process:The developer is not aware of this problem and writes it out.CodeAs follows:
Code highlighting produced by Actipro CodeHighlighter (freeware)http://www.CodeHighlighter.com/-->
1
A
Href
= "Http://www.youiyou.net"
>
2
Object
Classid
= "CLSID:
Taxi Cab Scheme
Time Limit: 20000/10000 MS (Java/others) memory limit: 65536/32768 K (Java/Others)Total submission (s): 707 accepted submission (s): 336Problem descriptionrunning a taxi station is not all that simple. apart from the obvious demand for a centralised coordination of the cabs in order to pick up the customers calling to get a cab as soon as possible, there is also a need to schedule all the taxi rides which have been booked in advance. g
Title Link: http://acm.hdu.edu.cn/showproblem.php?pid=1350Taxi Cab SchemeTime limit:20000/10000 MS (java/others) Memory limit:65536/32768 K (java/others)Total Submission (s): 943 Accepted Submission (s): 456Problem descriptionrunning A taxi station isn't all, simple. Apart from the obvious demand for a centralised coordination of the cabs in order to pick up the customers calling to get A cab as soon as possible, there is also a need to schedule all t
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